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Installing Docker and Docker Compose on CentOS Stream 8

5 min read
LinuxDocker

Introduction

This article explains how to install Docker and Docker Compose on CentOS Stream 8.

Prerequisite knowledge

What is Docker?

Docker is an open platform for developing, deploying, and running applications using container virtualization. Docker isolates applications from the development and runtime environment through OS-level container virtualization, making applications easier to deliver quickly. The environment itself can also be managed as code, in the form of an image, just like the application. By using Docker for development, testing, and deployment, you can greatly shorten the gap between writing code and running it in production. https://www.docker.com/

What is Docker Compose?

Compose is a tool for defining and running multi-container Docker applications. Compose uses YAML files to configure application services. With a single command, you can create and start the services based on those settings. https://docs.docker.jp/compose/

Preparation

Building CentOS8 Stream

Prepare CentOS Stream 8 by following the article below.

https://www.munenick.me/blog/esxi-centos8

Building Docker

First, install and start Docker.

Add repository

Run the following command to add the Docker repository.

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

Installing Docker

Run the following command to install Docker.

dnf -y install --nobest docker-ce docker-ce-cli

Enabling Docker at boot

Run the following command to enable Docker to start automatically at boot.

systemctl enable docker

Starting Docker

Run the following command to start Docker.

systemctl start docker

Verifying Docker startup

Run the following command and confirm that Docker is running.

systemctl status docker

Installing Docker Compose

Next, install Docker Compose.

Installing wget

Run the following command to install wget.

dnf -y install wget

Download Docker Compose

Run the following command to download Docker Compose.

*Version 2.2.3 was the latest version as of 2022/03/03. Check the latest version on the website below and update the command as needed. https://github.com/docker/compose/releases/

wget -O /usr/local/bin/docker-compose https://github.com/docker/compose/releases/download/v2.2.3/docker-compose-linux-x86_64

Grant execute permission to Docker Compose

Run the following command to grant execute permission to Docker Compose.

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

Confirm the Docker Compose installation

Run the following command to check the Docker Compose version.

docker-compose --version

Conclusion

This completes the Docker and Docker Compose setup. Thank you for following along. In future articles, I would like to cover examples that use Docker and Docker Compose.