{"id":44604,"date":"2022-04-13T21:41:03","date_gmt":"2022-04-13T21:41:03","guid":{"rendered":"https:\/\/linuxiac.com\/?p=44604"},"modified":"2025-07-21T08:14:58","modified_gmt":"2025-07-21T08:14:58","slug":"how-to-install-docker-on-almalinux-or-rocky-linux","status":"publish","type":"post","link":"https:\/\/linuxiac.com\/how-to-install-docker-on-almalinux-or-rocky-linux\/","title":{"rendered":"How to Install Docker on AlmaLinux 8 \/ Rocky Linux 8"},"content":{"rendered":"\n

This guide is for users running Docker on AlmaLinux 8 or Rocky Linux 8. If you\u2019ve already upgraded to Alma 10 or Rocky 10, check out our updated guides \u2014 you can find the one for Alma 10 here<\/a> and the one for Rocky 10 here<\/a>.<\/em><\/p>\n\n\n\n

Docker is a popular open-source platform for developing, deploying, running, and shipping container applications. They are similar to virtual machines and help separate applications from the underlying system.<\/p>\n\n\n\n

If you’ve just installed AlmaLinux 8 or Rocky Linux 8<\/a>, you may be wondering how to get Docker up and running, as RHEL<\/a> doesn\u2019t offer native support for Docker.<\/p>\n\n\n\n

It probably seems strange to you, and if you ask yourself if there is a reason for this, the answer is yes, there is. Red Hat supports its product, Podman<\/a>, an alternative to Docker.<\/p>\n\n\n\n

So without further ado, let me show you how to install Docker on AlmaLinux or Rocky Linux<\/a> and get started with installing containerized software. <\/p>\n\n\n\n

Step 1: Updating the System<\/h2>\n\n\n\n

Begin by updating the AlmaLinux 8 \/ Rocky Linux 8 system OS packages to recent versions. This way, we ensure we have a wholly upgraded system.<\/p>\n\n\n\n

So, first, please update existing software with the following command:<\/p>\n\n\n

sudo dnf update<\/code><\/span>Code language:<\/span> Bash<\/span> (<\/span>bash<\/span>)<\/span><\/small><\/pre>\n\n\n
\"Update<\/a><\/figure>\n\n\n\n
As you can see, no update packages are available, but if you have updates, apply them before proceeding to the next step.<\/p>\n\n\n\n
Step 2: Adding Docker Repository<\/h2>\n\n\n\n
A Docker repository for RHEL-based Linux systems contains RPM packages for installation. So we’ll need to add this repository before installing Docker.<\/p>\n\n\n\n
First, type the following command in your terminal window to install the yum-utils<\/code> package:<\/p>\n\n\n
sudo dnf install yum-utils<\/code><\/span>Code language:<\/span> Bash<\/span> (<\/span>bash<\/span>)<\/span><\/small><\/pre>\n\n\n
\"Installing<\/a><\/figure>\n\n\n\n
The yum-utils<\/code> package provides a collection of tools for managing yum repositories.<\/p>\n\n\n\n
Next, we need to add the Docker repository to our system with the following command:<\/p>\n\n\n
sudo dnf config-manager --add-repo https:\/\/download.docker.com\/linux\/centos\/docker-ce.repo<\/code><\/span>Code language:<\/span> Bash<\/span> (<\/span>bash<\/span>)<\/span><\/small><\/pre>\n\n\n
\"Adding<\/a><\/figure>\n\n\n\n
As you can see, the system informs you that it has successfully retrieved the repository.<\/p>\n\n\n\n
Step 3: Run System Update<\/h2>\n\n\n\n
Run the system update, forcing your Alma \/ Rocky installation to rebuild the system repo cache to recognize the newly added Docker repository and its packages.<\/p>\n\n\n
sudo dnf update<\/code><\/span>Code language:<\/span> Bash<\/span> (<\/span>bash<\/span>)<\/span><\/small><\/pre>\n\n\n
\"Updating<\/a><\/figure>\n\n\n\n
Step 4: List Available Repos<\/h2>\n\n\n\n
You can use this command to verify that the Docker repo was properly added:<\/p>\n\n\n
sudo dnf repolist<\/code><\/span>Code language:<\/span> Bash<\/span> (<\/span>bash<\/span>)<\/span><\/small><\/pre>\n\n\n
\"List<\/a><\/figure>\n\n\n\n
Step 5: Install Docker on AlmaLinux 8 \/ Rocky Linux 8<\/h2>\n\n\n\n
Now that we’ve added the Docker repository to our system, we can install Docker along with its command-line tool and containerd.io to manage the container lifecycle of our host system more efficiently.<\/p>\n\n\n\n
The command below will install the latest Docker package for Alma 8 \/ Rocky 8:<\/p>\n\n\n
sudo dnf install docker-ce docker-ce-cli containerd.io<\/code><\/span>Code language:<\/span> Bash<\/span> (<\/span>bash<\/span>)<\/span><\/small><\/pre>\n\n\n
\"Install<\/a><\/figure>\n\n\n\n
Confirm with “Y<\/em>” that you allow the installation of the displayed list of packages.<\/p>\n\n\n\n
Next, you will be asked if you accept the Docker GPG key to be imported into your system. Confirm again with “Y<\/em>.”<\/p>\n\n\n\n
\"Importing<\/a><\/figure>\n\n\n\n
Wait for the confirmation message for the successful completion of the Docker installation on your AlmaLinux \/ Rocky Linux system.<\/p>\n\n\n\n
\"Docker<\/a><\/figure>\n\n\n\n
Step 6: Start, Enable, and Verify the Docker Service<\/h2>\n\n\n\n
After the installation is complete, you can launch the Docker service and configure it to start automatically when the system boots:<\/p>\n\n\n
sudo systemctl start docker\nsudo systemctl enable<\/span> docker<\/code><\/span>Code language:<\/span> Bash<\/span> (<\/span>bash<\/span>)<\/span><\/small><\/pre>\n\n\n
\"Start<\/a><\/figure>\n\n\n\n
To confirm the running status of Docker, issue the command:<\/p>\n\n\n
sudo systemctl status docker<\/code><\/span>Code language:<\/span> Bash<\/span> (<\/span>bash<\/span>)<\/span><\/small><\/pre>\n\n\n
\"Verifying<\/a><\/figure>\n\n\n\n
As you can see, Docker is up and running as expected.<\/p>\n\n\n\n
Step 7: Enabling Non-root Users to Run Docker Commands<\/h2>\n\n\n\n
So far, we have successfully installed Docker on our AlmaLinux \/ Rocky Linux system.<\/p>\n\n\n\n
However, only root and users with sudo privileges<\/a> can execute Docker commands by default. So, if you attempt to run the docker<\/code> command without prefixing it with sudo<\/code>, you\u2019ll get an output like this:<\/p>\n\n\n\n
\"Docker<\/a><\/figure>\n\n\n\n
To run Docker commands as a non-root user, you must add your user to the docker<\/code> group<\/a>. To do that, type in:<\/p>\n\n\n
sudo usermod -aG docker ${USER}<\/span><\/code><\/span>Code language:<\/span> Bash<\/span> (<\/span>bash<\/span>)<\/span><\/small><\/pre>\n\n\n
In the command shown above, ${USER}<\/code> is an environment variable that holds your username.<\/p>\n\n\n\n
Now, you can check if your user is in docker<\/code> group or not:<\/p>\n\n\n
id $USER<\/span><\/code><\/span>Code language:<\/span> Bash<\/span> (<\/span>bash<\/span>)<\/span><\/small><\/pre>\n\n\n
\"Adding<\/a><\/figure>\n\n\n\n
You can log out and log back in to get the group membership session updated.<\/p>\n\n\n\n
Step 8: Testing the Docker Installation<\/h2>\n\n\n\n
Now that we’ve installed Docker on AlmaLinux \/ Rocky Linux, it’s time to ensure everything is working correctly.<\/p>\n\n\n\n
To do this, we’ll need a container image to test with. Fortunately, an image is already available for testing. Let’s put the installation to the test by running the hello-world<\/code> container with the following commands:<\/p>\n\n\n
docker pull hello-world\ndocker run hello-world<\/code><\/span>Code language:<\/span> Bash<\/span> (<\/span>bash<\/span>)<\/span><\/small><\/pre>\n\n\n
\"Testing<\/a><\/figure>\n\n\n\n
Congratulations! You deserve it. This output confirms that the installation of Docker on AlmaLinux 8 \/ Rocky Linux 8 was successful.<\/p>\n\n\n\n
Conclusion<\/h2>\n\n\n\n
This tutorial demonstrated installing Docker on an AlmaLinux 8 \/ Rocky Linux 8 system. Now you can get started with pulling images and running containers.<\/p>\n\n\n\n
To learn more about Docker, check out the official Docker documentation<\/a> or look at our introductory guide: What is a Docker Container: An Introductory Guide for Beginners<\/a>.<\/p>\n\n\n\n
If you have any questions or suggestions, let me know, and I\u2019ll be happy to follow up with you. Happy docking!<\/p>\n","protected":false},"excerpt":{"rendered":"
This article will guide you step-by-step through the most efficient way to install Docker on AlmaLinux 8 or Rocky Linux 8.<\/p>\n","protected":false},"author":10,"featured_media":44610,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9,4417],"tags":[3248,3470,1439,3254],"class_list":["post-44604","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutorials","category-linux-knowledge","tag-almalinux","tag-containers","tag-docker","tag-rocky-linux"],"blocksy_meta":{"post_title_panel":"","has_hero_section":"default","d0944749d790fa2bd31ab3659e0feae8":"","hero_section":"type-2","hero_elements":[{"id":"custom_title","enabled":true,"heading_tag":"h1","title":"Home","__id":"RcL6Te_mKU06JS9NDytMw"},{"id":"custom_description","enabled":false,"description_visibility":{"desktop":true,"tablet":true,"mobile":false},"__id":"CEefxW865a26j1w7faCep"},{"id":"custom_meta","enabled":true,"meta_elements":[{"id":"author","enabled":true,"label":"By","has_author_avatar":"yes","avatar_size":50,"__id":"B-_dxdzSOLN_5Z2_vrkQt"},{"id":"post_date","enabled":true,"label":"On","date_format_source":"default","date_format":"M 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