{"id":16917,"date":"2026-06-03T11:56:46","date_gmt":"2026-06-03T11:56:46","guid":{"rendered":"https:\/\/greenwebpage.com\/community\/?p=16917"},"modified":"2026-06-03T11:56:50","modified_gmt":"2026-06-03T11:56:50","slug":"how-to-install-docker-on-ubuntu-26-04","status":"publish","type":"post","link":"https:\/\/greenwebpage.com\/community\/how-to-install-docker-on-ubuntu-26-04\/","title":{"rendered":"How to Install Docker on Ubuntu 26.04 LTS: Complete Step-by-Step Guide"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\n  Docker is the industry standard for containerization, and it allows developers and system administrators to package applications and all the dependencies needed to run them into a lightweight and portable container. From web application deployments to constructing CI\/CD pipelines, managing cloud-native workloads, and everything in between, Docker ensures a consistent development, test, and production environment.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/ubuntu.com\/download\/desktop\">Ubuntu 26.04 LTS<\/a> is a great platform for Docker deployments, thanks to its long-term support, enterprise-grade stability, frequent security updates, and wide hardware support. When installing Docker from the official Docker repository, you are guaranteed to receive the latest stable releases, security patches, and production-ready features.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This tutorial will help you install Docker on Ubuntu 26.04 LTS, configure it for daily use, test it, enable Docker Compose, and practice security best practices in a secure Docker environment.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Table of Contents<\/strong>\n<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"#What-Is-Docker\">What Is Docker?<\/a><\/li>\n\n\n\n<li><a href=\"#Why-Install-Docker-on-Ubuntu-26.04-LTS\">Why Install Docker on Ubuntu 26.04 LTS?<\/a><\/li>\n\n\n\n<li><a href=\"#post-16917-_sfaxsvf4usst\">System Requirements and Prerequisites<\/a><\/li>\n\n\n\n<li><a href=\"#Install-Docker-on-Ubuntu-26.04-LTS-Using-the-Official-Docker-APT-Repository\">Install Docker on Ubuntu 26.04 LTS <\/a><\/li>\n\n\n\n<li id=\"Install-Docker-on-Ubuntu-26.04-LTS-Using-the-Official-Docker-APT-Repository\"><a href=\"#post-16917-_9ubhoauashg2\">Step 1: Remove Old or Conflicting Docker Packages<\/a><\/li>\n\n\n\n<li><a href=\"#Step-2:-Add-Docker's-Official-Repository\">Step 2: Add Docker&#8217;s Official Repository<\/a><\/li>\n\n\n\n<li><a href=\"#Step-3:-Install-Docker-Engine\">Step 3: Install Docker Engine<\/a><\/li>\n\n\n\n<li><a href=\"#Step-4:-Configure-Docker-for-Non-Root-Users\">Step 4: Configure Docker for Non-Root Users<\/a><\/li>\n\n\n\n<li><a href=\"#post-16917-_dbge4hn6wtld\">Step 5: Verify the Installation<\/a><\/li>\n\n\n\n<li id=\"Step-7:-Enable-Docker-at-Boot\"><a href=\"#post-16917-_ywpamew9l271\">Step 6: Verify Docker Compose<\/a><\/li>\n\n\n\n<li><a href=\"#Step-7:-Enable-Docker-at-Boot\">Step 7: Enable Docker at Boot<\/a><\/li>\n\n\n\n<li><a href=\"#Troubleshooting-Common-Docker-Installation-Issues\">Troubleshooting Common Docker Issues<\/a><\/li>\n\n\n\n<li><a href=\"#Conclusion\">Conclusion<\/a><br>  <\/li>\n<\/ul>\n\n\n\n<h2 id=\"What-Is-Docker\" class=\"wp-block-heading\"><a id=\"post-16917-_dhbwpp5ezit3\"><\/a><strong>What Is Docker?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Docker is an open source container platform designed for running applications and their dependencies within isolated environments (containers). Everything an application requires is packaged in a container: libraries, runtime components, configuration files, and deployments become more predictable and portable.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Containers share the host operating system kernel as opposed to traditional virtual machines, which run in virtualization software using their own isolated operating system. This architecture minimizes resource overhead, speeds up startup time, and makes the application deployment on different environments easier.\n<\/p>\n\n\n\n<h2 id=\"Why-Install-Docker-on-Ubuntu-26.04-LTS\" class=\"wp-block-heading\"><a id=\"post-16917-_s3puzuuxonm8\"><\/a><strong>Why Install Docker on Ubuntu 26.04 LTS?<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\n  The Ubuntu 26.04 LTS release offers a secure and stable base for container-based applications. It is highly popular in enterprise environments, cloud infrastructures, and development workstations due to its long-term support and regular security updates.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Typical use cases for Docker containers deployed on Ubuntu servers involve hosting databases, building scalable cloud-based applications, running development environments, hosting microservices, and deploying Web applications. The pair of Docker and Ubuntu is still one of the most reliable options for today&#8217;s infrastructure management.\n<\/p>\n\n\n\n<h2 id=\"System-Requirements-and-Prerequisites\" class=\"wp-block-heading\"><a id=\"post-16917-_sfaxsvf4usst\"><\/a><strong>System Requirements and Prerequisites<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\n  In order to <a href=\"https:\/\/greenwebpage.com\/community\/how-to-install-docker-on-ubuntu-24-04\/\">install Docker<\/a>, check that the following requirements are met:\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p><strong>Requirement<\/strong>\n<\/p><\/td><td><p><strong>Recommended<\/strong>\n<\/p><\/td><\/tr><tr><td><p>\n  Operating System\n<\/p><\/td><td><p>\n  Ubuntu 26.04 LTS (64-bit)\n<\/p><\/td><\/tr><tr><td><p>\n  RAM\n<\/p><\/td><td><p>\n  2 GB or more\n<\/p><\/td><\/tr><tr><td><p>\n  Available Storage\n<\/p><\/td><td><p>\n  5 GB or more\n<\/p><\/td><\/tr><tr><td><p>\n  Internet Connection\n<\/p><\/td><td><p>\n  Required\n<\/p><\/td><\/tr><tr><td><p>\n  User Privileges\n<\/p><\/td><td><p>\n  sudo access\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a id=\"post-16917-_j1x68iv3d863\"><\/a>\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_h6odkzj5x1rx\"><\/a><strong>Verify Your Ubuntu Version<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  To make sure your system is running Ubuntu 26.04 LTS, execute the following command.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  lsb_release -a\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1041\" height=\"256\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-1.png\" alt=\"  lsb_release -a\n\" class=\"wp-image-16918\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-1.png 1041w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-1-300x74.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-1-1024x252.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-1-768x189.png 768w\" sizes=\"(max-width: 1041px) 100vw, 1041px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This command prints out information about your Linux distribution. <a href=\"https:\/\/greenwebpage.com\/community\/how-to-check-os-version-in-linux\/\">Check if the release version<\/a> is the same as the Ubuntu 26.04 LTS before installation.\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_hpdwv52wt56u\"><\/a><strong>Update Existing Packages<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Having up-to-date package information means that you have the latest security updates and software patches. An updated system will prevent compatibility problems when installing Docker.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  sudo apt update\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" width=\"1044\" height=\"266\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-2.png\" alt=\"  sudo apt update\n\" class=\"wp-image-16919\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-2.png 1044w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-2-300x76.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-2-1024x261.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-2-768x196.png 768w\" sizes=\"(max-width: 1044px) 100vw, 1044px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a id=\"post-16917-_ysuruwjimgjr\"><\/a><strong>Install Docker on Ubuntu 26.04 LTS Using the Official Docker APT Repository<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\n  The recommended way to install Docker on Ubuntu 26.04 LTS is from Docker&#8217;s official repository. That means the latest features, secure updates, and the latest Docker Compose.\n<\/p>\n\n\n\n<h2 id=\"Step-1:-Remove-Old-or-Conflicting-Docker-Packages\" class=\"wp-block-heading\"><a id=\"post-16917-_9ubhoauashg2\"><\/a><strong>Step 1: Remove Old or Conflicting Docker Packages<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\n  There may be some Docker-related packages that are in conflict with the most recent Docker release. In some cases, older Docker-related packages can conflict with the newest Docker release. Their removal helps to provide a clean installation.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  for pkg in docker.io docker-doc docker-compose docker-compose-v2 \\\n<\/p><p>\n  podman-docker containerd runc; do\n<\/p><p>\n  sudo apt-get remove -y $pkg\n<\/p><p>\n  done\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" width=\"1046\" height=\"587\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-3.png\" alt=\"  for pkg in docker.io docker-doc docker-compose docker-compose-v2 \\\n\" class=\"wp-image-16920\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-3.png 1046w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-3-300x168.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-3-1024x575.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-3-768x431.png 768w\" sizes=\"(max-width: 1046px) 100vw, 1046px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This command will look for any pre-installed Docker packages and remove them. If they are not installed, the Ubuntu operating system will proceed without error.\n<\/p>\n\n\n\n<h2 id=\"Step-2:-Add-Docker's-Official-Repository\" class=\"wp-block-heading\"><a id=\"post-16917-_ethvnidmtca7\"><\/a><strong>Step 2: Add Docker&#8217;s Official Repository<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Docker prefers to <a href=\"https:\/\/greenwebpage.com\/community\/how-to-install-docker-on-ubuntu-22-04\/\">install Docker Engine<\/a> from their official repository as opposed to distribution-provided packages. This way, the newest stable versions and security patches are assured.\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_j845oskkvlk\"><\/a><strong>Install Required Dependencies<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Such packages can be used to communicate securely with external repositories, and Ubuntu can confirm the authenticity of packages. Putting them first allows downloading and validation of Docker packages to be done correctly.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  sudo apt-get install -y \\\n<\/p><p>\n  ca-certificates \\\n<\/p><p>\n  curl \\\n<\/p><p>\n  gnupg\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1047\" height=\"580\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-4.png\" alt=\"sudo apt-get install -y \\ ca-certificates \\ curl \\gnupg\" class=\"wp-image-16921\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-4.png 1047w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-4-300x166.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-4-1024x567.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-4-768x425.png 768w\" sizes=\"(max-width: 1047px) 100vw, 1047px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_wjcn9ksbwe0t\"><\/a><strong>Create the Keyring Directory<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  The trusted repository signing keys are stored in the keyring directory. This will hold the official GPG key for Docker to ensure the integrity of packages before installation.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  sudo install -m 0755 -d \/etc\/apt\/keyrings\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1046\" height=\"89\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-5.png\" alt=\"sudo install -m 0755 -d \/etc\/apt\/keyrings\" class=\"wp-image-16922\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-5.png 1046w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-5-300x26.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-5-1024x87.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-5-768x65.png 768w\" sizes=\"(max-width: 1046px) 100vw, 1046px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_wfc7m8ozx49l\"><\/a><strong>Download Docker&#8217;s Official GPG Key<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This command downloads Docker&#8217;s public crypto key and transforms it for use with the Ubuntu package manager. Package verification is important for safeguarding against tampered or unauthorized software.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  curl -fsSL https:\/\/download.docker.com\/linux\/ubuntu\/gpg | \\\n<\/p><p>\n  sudo gpg &#8211;dearmor -o \/etc\/apt\/keyrings\/docker.gpg\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1043\" height=\"150\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-6.png\" alt=\"curl -fsSL https:\/\/download.docker.com\/linux\/ubuntu\/gpg | \\ \" class=\"wp-image-16923\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-6.png 1043w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-6-300x43.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-6-1024x147.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-6-768x110.png 768w\" sizes=\"(max-width: 1043px) 100vw, 1043px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_en3cvrnh9oh\"><\/a><strong>Set Proper Permissions<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Make the Docker GPG public and readable to all users. Make \/etc\/apt\/keyrings\/docker.gpg public and readable by all.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  sudo chmod a+r \/etc\/apt\/keyrings\/docker.gpg\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1043\" height=\"92\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-7.png\" alt=\"sudo chmod a+r \/etc\/apt\/keyrings\/docker.gpg\" class=\"wp-image-16924\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-7.png 1043w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-7-300x26.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-7-1024x90.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-7-768x68.png 768w\" sizes=\"(max-width: 1043px) 100vw, 1043px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  The package manager needs to be able to read the GPG key file. If you set them right, repository verification will operate as it should when later updates are performed.\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_krwwluinojmd\"><\/a><strong>Add the Docker Repository<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This command installs Docker&#8217;s official package repository on Ubuntu. Your system is now able to download and install Docker packages from Docker&#8217;s released channel.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  echo \\\n<\/p><p>\n  &#8220;deb [arch=$(dpkg &#8211;print-architecture) \\\n<\/p><p>\n  signed-by=\/etc\/apt\/keyrings\/docker.gpg] \\\n<\/p><p>\n  https:\/\/download.docker.com\/linux\/ubuntu \\\n<\/p><p>\n  $(. \/etc\/os-release &amp;&amp; echo &#8220;$VERSION_CODENAME&#8221;) stable&#8221; | \\\n<\/p><p>\n  sudo tee \/etc\/apt\/sources.list.d\/docker.list &gt; \/dev\/null\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1044\" height=\"237\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-8.png\" alt=\"echo \\ &quot;deb [arch=$](dpkg --print-architecture) \\ signed-by=\/etc\/apt\/keyrings\/docker.pgp&quot;\" class=\"wp-image-16925\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-8.png 1044w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-8-300x68.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-8-1024x232.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-8-768x174.png 768w\" sizes=\"(max-width: 1044px) 100vw, 1044px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_kbr8zu6e2fa\"><\/a><strong>Refresh the Package Index<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  You need to refresh the Package index.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  sudo apt-get update\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1051\" height=\"345\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-9.png\" alt=\"sudo apt-get update\" class=\"wp-image-16926\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-9.png 1051w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-9-300x98.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-9-1024x336.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-9-768x252.png 768w\" sizes=\"(max-width: 1051px) 100vw, 1051px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  By refreshing the package index, Ubuntu can get the package information from the new Docker repository. In the update output, you should see that Docker packages are included.\n<\/p>\n\n\n\n<h2 id=\"Step-3:-Install-Docker-Engine\" class=\"wp-block-heading\"><a id=\"post-16917-_sanroeod8d6g\"><\/a><strong>Step 3: Install Docker Engine<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\n  With the repository set up, you can proceed to install Docker Engine and some of its components.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  sudo apt-get install -y \\\n<\/p><p>\n  docker-ce \\\n<\/p><p>\n  docker-ce-cli \\\n<\/p><p>\n  containerd.io \\\n<\/p><p>\n  docker-buildx-plugin \\\n<\/p><p>\n  docker-compose-plugin\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1042\" height=\"521\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-10.png\" alt=\"sudo apt-get install -y \\\" class=\"wp-image-16927\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-10.png 1042w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-10-300x150.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-10-1024x512.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-10-768x384.png 768w\" sizes=\"(max-width: 1042px) 100vw, 1042px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  These packages feature Docker daemon, command-line tools, container runtime, Buildx capabilities, and Docker Compose support. This can take a few minutes, depending on the speed of the Internet connection.\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_obwofgurn1ca\"><\/a><strong>Verify the Installed Version<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This command verifies that Docker has been installed and shows the version of Docker that is currently installed. A valid version number means that the Docker CLI is installed on your machine.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  docker &#8211;version\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1050\" height=\"123\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-11.png\" alt=\"\" class=\"wp-image-16928\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-11.png 1050w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-11-300x35.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-11-1024x120.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-11-768x90.png 768w\" sizes=\"(max-width: 1050px) 100vw, 1050px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 id=\"Step-4:-Configure-Docker-for-Non-Root-Users\" class=\"wp-block-heading\"><a id=\"post-16917-_2u2dhyd710sm\"><\/a><strong>Step 4: Configure Docker for Non-Root Users<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Docker commands are run as an administrator by default. If you do not want to use the sudo command every time you run a Docker command, you can add your user account to the Docker group.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  sudo groupadd docker\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1046\" height=\"117\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-12.png\" alt=\"sudo groupadd docker\" class=\"wp-image-16929\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-12.png 1046w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-12-300x34.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-12-1024x115.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-12-768x86.png 768w\" sizes=\"(max-width: 1046px) 100vw, 1046px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  If the group doesn&#8217;t exist, create the Docker user group.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  sudo usermod -aG docker $USER\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1040\" height=\"93\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-13.png\" alt=\"sudo usermod -aG docker $USER\" class=\"wp-image-16930\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-13.png 1040w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-13-300x27.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-13-1024x92.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-13-768x69.png 768w\" sizes=\"(max-width: 1040px) 100vw, 1040px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This command will add the current user to the Docker group, which will enable the use of Docker commands without elevation of privileges.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  newgrp docker\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1038\" height=\"86\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-14.png\" alt=\"newgrp docker\" class=\"wp-image-16931\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-14.png 1038w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-14-300x25.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-14-1024x85.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-14-768x64.png 768w\" sizes=\"(max-width: 1038px) 100vw, 1038px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  In the current session, the new group Membership is immediately activated. Or you can log out, log in to apply the changes.\n<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a id=\"post-16917-_dbge4hn6wtld\"><\/a><strong>Step 5: Verify the Docker Installation<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\n  After installing Docker and configuring user permissions, it is important to verify that the Docker daemon is running correctly and can successfully launch containers.\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_lboalyqeuz3e\"><\/a><strong>Run the Official Test Container<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This command downloads the official hello-world image from Docker Hub and runs it as a container. If Docker is installed correctly, you will see a confirmation message indicating that the Docker daemon, networking, and container runtime are functioning properly.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  docker run hello-world\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1036\" height=\"557\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-15.png\" alt=\"docker run hello-world\" class=\"wp-image-16932\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-15.png 1036w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-15-300x161.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-15-1024x551.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-15-768x413.png 768w\" sizes=\"(max-width: 1036px) 100vw, 1036px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_feeoxmhd7qdy\"><\/a><strong>Check the Installed Docker Version<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This command displays the currently <a href=\"https:\/\/greenwebpage.com\/community\/install-docker-on-centos-10\/\">installed Docker version<\/a>. Verifying the version confirms that the Docker CLI is properly installed and accessible from your system.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  docker &#8211;version\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1044\" height=\"120\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-16.png\" alt=\"docker --version\" class=\"wp-image-16933\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-16.png 1044w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-16-300x34.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-16-1024x118.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-16-768x88.png 768w\" sizes=\"(max-width: 1044px) 100vw, 1044px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_eolsg3bplpt3\"><\/a><strong>Display Detailed Docker Information<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  The Docker info command provides detailed information about your Docker environment, including storage drivers, container runtime details, available resources, and system configuration.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  docker info\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1044\" height=\"583\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-17.png\" alt=\"docker info\" class=\"wp-image-16934\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-17.png 1044w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-17-300x168.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-17-1024x572.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-17-768x429.png 768w\" sizes=\"(max-width: 1044px) 100vw, 1044px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_k3w27yjag5fo\"><\/a><strong>Verify Docker Service Status<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This command confirms that the Docker service is running. A healthy installation should display an &#8220;active (running)&#8221; status.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  sudo systemctl status docker\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1049\" height=\"560\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-18.png\" alt=\"sudo systemctl status docker\" class=\"wp-image-16935\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-18.png 1049w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-18-300x160.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-18-1024x547.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-18-768x410.png 768w\" sizes=\"(max-width: 1049px) 100vw, 1049px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a id=\"post-16917-_ywpamew9l271\"><\/a><strong>Step 6: Verify Docker Compose<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/greenwebpage.com\/community\/how-to-install-and-use-docker-compose-on-ubuntu-24-04\/\">Docker Compose<\/a> simplifies the management of multi-container applications by allowing services to be defined in a single configuration file.\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_888o92ruqbcc\"><\/a><strong>Check Docker Compose Version<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This command verifies that the Docker Compose plugin was installed successfully. You should see the installed Compose version displayed in the output.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  docker compose version\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1032\" height=\"126\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-19.png\" alt=\"docker compose version\" class=\"wp-image-16936\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-19.png 1032w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-19-300x37.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-19-1024x125.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-19-768x94.png 768w\" sizes=\"(max-width: 1032px) 100vw, 1032px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_7p4zftmacmf9\"><\/a><strong>Create a Test Compose File<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Create a file named docker-compose.yml and add the following content:\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  services:\n<\/p><p>\n    web:\n<\/p><p>\n      image: nginx\n<\/p><p>\n      ports:\n<\/p><p>\n        &#8211; &#8220;80:80&#8221;\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1042\" height=\"226\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-20.png\" alt=\"docker-compose.yml\" class=\"wp-image-16937\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-20.png 1042w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-20-300x65.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-20-1024x222.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-20-768x167.png 768w\" sizes=\"(max-width: 1042px) 100vw, 1042px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This configuration defines a simple <a href=\"https:\/\/greenwebpage.com\/community\/how-to-install-nginx-on-ubuntu-22-04\/\">Nginx web server container<\/a> that listens on port 80.\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_cku1jbe2pgoj\"><\/a><strong>Launch the Test Application<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/greenwebpage.com\/community\/how-to-install-docker-compose-on-ubuntu-22-04\/\">Docker Compose downloads<\/a> the Nginx image if necessary and starts the container in detached mode. Running containers in detached mode allows services to continue operating in the background.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  docker compose up -d\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1051\" height=\"210\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-21.png\" alt=\"docker compose up -d\" class=\"wp-image-16938\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-21.png 1051w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-21-300x60.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-21-1024x205.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-21-768x153.png 768w\" sizes=\"(max-width: 1051px) 100vw, 1051px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_6kay9ok2a6tp\"><\/a><strong>Verify Running Containers<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This command lists all active containers on the system. You should see the Nginx container running and listening on the configured port.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  docker ps\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1046\" height=\"214\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-22.png\" alt=\"docker ps\" class=\"wp-image-16939\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-22.png 1046w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-22-300x61.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-22-1024x209.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-22-768x157.png 768w\" sizes=\"(max-width: 1046px) 100vw, 1046px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a id=\"post-16917-_ptjhbj9f3v79\"><\/a><strong>Step 7: Enable Docker at Boot<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Enabling Docker at boot ensures that containers and services can start automatically after system restarts.\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_27z85mx8lok9\"><\/a><strong>Enable the Docker Service<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This command configures Docker to start automatically whenever the system boots. Automatic startup is recommended for production environments and servers hosting containerized applications.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  sudo systemctl enable docker.service\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1050\" height=\"177\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-23.png\" alt=\"sudo systemctl enable docker.service\" class=\"wp-image-16940\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-23.png 1050w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-23-300x51.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-23-1024x173.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-23-768x129.png 768w\" sizes=\"(max-width: 1050px) 100vw, 1050px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_5prxsf7lla38\"><\/a><strong>Enable the Container Runtime<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Containerd is the underlying runtime used by Docker. Enabling this service ensures that container management capabilities are available immediately after startup.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  sudo systemctl enable containerd.service\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1043\" height=\"85\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-24.png\" alt=\"sudo systemctl enable containerd.service\" class=\"wp-image-16941\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-24.png 1043w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-24-300x24.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-24-1024x83.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-24-768x63.png 768w\" sizes=\"(max-width: 1043px) 100vw, 1043px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_wkiq7mujcxd2\"><\/a><strong>Verify Startup Configuration<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  The command should return &#8220;enabled&#8221; if Docker has been successfully configured to start automatically.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  systemctl is-enabled docker\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1042\" height=\"119\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-25.png\" alt=\"\" class=\"wp-image-16942\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-25.png 1042w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-25-300x34.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-25-1024x117.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-25-768x88.png 768w\" sizes=\"(max-width: 1042px) 100vw, 1042px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 id=\"Troubleshooting-Common-Docker-Installation-Issues\" class=\"wp-block-heading\"><a id=\"post-16917-_26gf2chsa5gr\"><\/a><strong>Troubleshooting Common Docker Installation Issues<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Even straightforward installations can occasionally encounter issues. The following solutions address some of the most common Docker problems.\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_sv16rbirlw7h\"><\/a><strong>Error: Cannot connect to the Docker Daemon<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Restart the Docker service:\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  sudo systemctl restart docker\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1045\" height=\"95\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-26.png\" alt=\"sudo systemctl restart docker\" class=\"wp-image-16943\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-26.png 1045w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-26-300x27.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-26-1024x93.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-26-768x70.png 768w\" sizes=\"(max-width: 1045px) 100vw, 1045px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This command restarts the Docker daemon and resolves many temporary service-related issues.\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_uatfp7vilifo\"><\/a><strong>View Docker Service Logs<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Service logs provide valuable diagnostic information that can help identify startup failures or configuration problems.\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  journalctl -u docker\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1049\" height=\"317\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-27.png\" alt=\"journalctl -u docker\" class=\"wp-image-16944\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-27.png 1049w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-27-300x91.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-27-1024x309.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-27-768x232.png 768w\" sizes=\"(max-width: 1049px) 100vw, 1049px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_mhdcfiavwlj\"><\/a><strong>Error: Permission Denied<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Check your group membership:\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  groups\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1041\" height=\"124\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-28.png\" alt=\"groups\" class=\"wp-image-16945\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-28.png 1041w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-28-300x36.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-28-1024x122.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-28-768x91.png 768w\" sizes=\"(max-width: 1041px) 100vw, 1041px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  If the Docker group does not appear in the output, log out and back in or run newgrp docker to refresh your session. Repository errors are often caused by outdated package indexes or incorrectly configured repository settings.\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_7rxrfic2t4b1\"><\/a><strong>Network Connectivity Problems<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Test internet connectivity:\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  ping google.com\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1036\" height=\"467\" src=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-29.png\" alt=\"ping google.com\" class=\"wp-image-16946\" srcset=\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-29.png 1036w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-29-300x135.png 300w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-29-1024x462.png 1024w, https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/word-image-16917-29-768x346.png 768w\" sizes=\"(max-width: 1036px) 100vw, 1036px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Docker requires network access to download images and communicate with registries. Verifying connectivity can help <a href=\"https:\/\/greenwebpage.com\/community\/how-to-install-ufw-on-ubuntu-22-04\/\">identify firewall or DNS-related issues<\/a>.\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_6nrmd6pemork\"><\/a><strong>How do I Uninstall Docker?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Remove Docker packages:\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  sudo apt purge docker-ce docker-ce-cli containerd.io\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Then remove Docker data:\n<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><p>\n  sudo rm -rf \/var\/lib\/docker\n<\/p><p>\n  sudo rm -rf \/var\/lib\/containerd\n<\/p><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\n  This process completely removes Docker and all associated containers, images, and configuration files.\n<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a id=\"post-16917-_2bq8d9lu66sn\"><\/a><strong>Should I Use Docker or Podman?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Docker remains the most widely adopted container platform and offers the largest ecosystem, extensive documentation, and broad third-party integration support. <a href=\"https:\/\/greenwebpage.com\/community\/how-to-install-and-manage-podman-on-ubuntu-24-04\/\">Podman<\/a> is a strong alternative for users seeking daemonless and rootless container management, but Docker remains the preferred choice for most organizations.\n<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a id=\"post-16917-_cj1cvr8x25jr\"><\/a><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\n  To install Docker on Ubuntu 26.04 LTS, add Docker&#8217;s APT repository, install Docker engine, start and enable the Service, manage Docker as a Non-Root User, and verify installation. By using Docker&#8217;s official repository, configuring proper user permissions, and following security best practices, you can build a reliable and production-ready container environment.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Whether you are deploying web applications, managing microservices, running CI\/CD pipelines, or building scalable cloud infrastructure, Docker continues to be one of the most valuable tools in the Linux ecosystem. Following the steps outlined in this guide will help you install Docker confidently and maintain a secure, efficient, and scalable environment on Ubuntu 26.04 LTS.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n    <div class=\"xs_social_share_widget xs_share_url after_content \t\tmain_content  wslu-style-1 wslu-share-box-shaped wslu-fill-colored wslu-none wslu-share-horizontal wslu-theme-font-no wslu-main_content\">\n\n\t\t\n        <ul>\n\t\t\t        <\/ul>\n    <\/div> \n","protected":false},"excerpt":{"rendered":"<p>Docker is the industry standard for containerization, and it allows developers and system administrators to package applications and all the dependencies needed to run them into a lightweight and portable container. From web application deployments to constructing CI\/CD pipelines, managing cloud-native workloads, and everything in between, Docker ensures a consistent development, test, and production environment. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":16954,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[43],"tags":[],"class_list":["post-16917","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutorials"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Install Docker on Ubuntu 26.04 LTS: Complete Step-by-Step Guide - Greenwebpage Community<\/title>\n<meta name=\"description\" content=\"This tutorial will help you install Docker on Ubuntu 26.04 LTS, configure it for daily use, test it, enable Docker Compose, and practice security best practices in a secure Docker environment.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/greenwebpage.com\/community\/how-to-install-docker-on-ubuntu-26-04\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Install Docker on Ubuntu 26.04 LTS: Complete Step-by-Step Guide - Greenwebpage Community\" \/>\n<meta property=\"og:description\" content=\"This tutorial will help you install Docker on Ubuntu 26.04 LTS, configure it for daily use, test it, enable Docker Compose, and practice security best practices in a secure Docker environment.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/greenwebpage.com\/community\/how-to-install-docker-on-ubuntu-26-04\/\" \/>\n<meta property=\"og:site_name\" content=\"Greenwebpage Community\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-03T11:56:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-03T11:56:50+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/Docker-on-Ubuntu-26.04-LTS-Complete-Step-Step-Guide.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1020\" \/>\n\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Karim Buzdar\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Karim Buzdar\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"15 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/greenwebpage.com\/community\/how-to-install-docker-on-ubuntu-26-04\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/greenwebpage.com\/community\/how-to-install-docker-on-ubuntu-26-04\/\"},\"author\":{\"name\":\"Karim Buzdar\",\"@id\":\"https:\/\/greenwebpage.com\/community\/#\/schema\/person\/467c100c1d017bc081473ee0440680c8\"},\"headline\":\"How to Install Docker on Ubuntu 26.04 LTS: Complete Step-by-Step Guide\",\"datePublished\":\"2026-06-03T11:56:46+00:00\",\"dateModified\":\"2026-06-03T11:56:50+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/greenwebpage.com\/community\/how-to-install-docker-on-ubuntu-26-04\/\"},\"wordCount\":1914,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/greenwebpage.com\/community\/#organization\"},\"image\":{\"@id\":\"https:\/\/greenwebpage.com\/community\/how-to-install-docker-on-ubuntu-26-04\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/greenwebpage.com\/community\/wp-content\/uploads\/2026\/06\/Docker-on-Ubuntu-26.04-LTS-Complete-Step-Step-Guide.jpg\",\"articleSection\":[\"Tutorials\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/greenwebpage.com\/community\/how-to-install-docker-on-ubuntu-26-04\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/greenwebpage.com\/community\/how-to-install-docker-on-ubuntu-26-04\/\",\"url\":\"https:\/\/greenwebpage.com\/community\/how-to-install-docker-on-ubuntu-26-04\/\",\"name\":\"How to Install Docker on Ubuntu 26.04 LTS: Complete Step-by-Step Guide - 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