How to Install Docker and Docker Compose on Rocky Linux

Linux

Install Docker and Docker compose on RockyLinux 8

Docker is an open-source containerization tool used to simplify the creation and deployment of applications by using the concept of containers. Containers allow us to package all the parts of an application and deploy it as one entity.Docker-compose is a Docker tool used to define and run multi-container applications. With Compose, you use a YAML file to configure your application’s services and create all the app’s services from that configuration.

In this Article,we will show you how to install docker and docker compose on Rocky Linux8 system.

Step 1 : install updates

we will install all the available updates using dnf

sudo dnf update

Also Read -> How to Install Docker on Ubuntu 20 04

step 2: Install docker

First we Add official Docker CE repository on your Rocky Linux 8. so that we can install latest and stable version of docker.

sudo dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo

then install docker with the following command.

sudo dnf install docker-ce

sample output:

Docker CE Stable - x86_64                                                                                                               289  B/s |  15 kB     00:52
Last metadata expiration check: 0:00:01 ago on Thu 16 Sep 2021 05:20:41 PM IST.
Dependencies resolved.
========================================================================================================================================================================
 Package                                       Architecture            Version                                                  Repository                         Size
========================================================================================================================================================================
Installing:
 docker-ce                                     x86_64                  3:20.10.8-3.el8                                          docker-ce-stable                   22 M
Installing dependencies:
 checkpolicy                                   x86_64                  2.9-1.el8                                                baseos                            345 k
 container-selinux                             noarch                  2:2.164.1-1.module+el8.4.0+643+525e162a                  appstream                          51 k
 containerd.io                                 x86_64                  1.4.9-3.1.el8                                            docker-ce-stable                   30 M
 docker-ce-cli                                 x86_64                  1:20.10.8-3.el8                                          docker-ce-stable                   29 M
 docker-ce-rootless-extras                     x86_64                  20.10.8-3.el8                                            docker-ce-stable                  4.6 M
 docker-scan-plugin                            x86_64                  0.8.0-3.el8                                              docker-ce-stable                  4.2 M
 fuse-common                                   x86_64                  3.2.1-12.el8                                             baseos                             20 k
 fuse-overlayfs                                x86_64                  1.6-1.module+el8.4.0+643+525e162a                        appstream                          72 k
 fuse3                                         x86_64                  3.2.1-12.el8                                             baseos                             49 k
 fuse3-libs                                    x86_64                  3.2.1-12.el8                                             baseos                             93 k
 libcgroup                                     x86_64                  0.41-19.el8                                              baseos                             69 k
 libslirp                                      x86_64                  4.3.1-1.module+el8.4.0+556+40122d08                      appstream                          68 k
 policycoreutils-python-utils                  noarch                  2.9-14.el8                                               baseos                            251 k
 python3-audit                                 x86_64                  3.0-0.17.20191104git1c2f876.el8.1                        baseos                             85 k
 python3-libsemanage                           x86_64                  2.9-6.el8                                                baseos                            126 k
 python3-policycoreutils                       noarch                  2.9-14.el8                                               baseos                            2.2 M
 python3-setools                               x86_64                  4.3.0-2.el8                                              baseos                            625 k
 slirp4netns                                   x86_64                  1.1.8-1.module+el8.4.0+556+40122d08                      appstream                          50 k
Enabling module streams:
 container-tools                                                       rhel8
Transaction Summary
========================================================================================================================================================================
Install  19 Packages
Total download size: 94 M
Installed size: 387 M
Is this ok [y/N]: y

once docker is installed, start and enable and check the status of docker service using below commands.

sudo systemctl start docker
sudo systemctl enable docker
sudo systemctl status docker

output:

[root@RockyLinux ~]#systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
   Active: active (running) since Thu 2021-09-16 17:49:28 IST; 49s ago
     Docs: https://docs.docker.com
 Main PID: 18605 (dockerd)

you can verify docker version with the following command.

docker --version

sample output:

Docker version 20.10.8, build 3967b7d

Step 3: Add local user to docker group

Add your current system user into the Docker group so that you can easily run the docker commands without using sudo.

sudo usermod -aG docker $USER

Also Read -> How to Install Docker on Debian 10

you can replace $USER in the above command with the specific system’s user you want to give the rights to manage Docker.

Step 4: Testing Docker

To test docker installation, run below command.

docker run hello-world

sample output:

Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
b8dfde127a29: Pull complete
Digest: sha256:61bd3cb6014296e214ff4c6407a5a7e7092dfa8eefdbbec539e133e97f63e09f
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.

Step 5: Install docker compose

you can download the current stable release of Docker Compose using curl.

sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

if you want diffrent version, you can find them on github Repository page.

once it is downloaded, execute the next permissions to the binary with the following command.

sudo chmod +x /usr/local/bin/docker-compose

if you want to run docker-compose from /usr/bin path then create symbolic link

sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

Now verify the version

docker-compose --version

sample output:

docker-compose version 1.29.2, build 5becea4c

That's it. Now you have successfully installed docker and docker compose on Rocky Linux 8 system.

Also Read -> How to Install Docker on Centos 7