Mel
Melhttps://unixcop.com
Unix/Linux Guru and FOSS supporter

How to install docker on centos 8

We will learn How to install docker on centos 8 in this article. Docker is a set of platform as a service products that use OS-level virtualization to deliver software in packages called containers. Containers are isolated from one another and bundle their own software, libraries and configuration files; they can communicate with each other through well-defined channels.

CentOS 8 uses the YUM package manager version v4.0.4. This version now uses DNF (Dandified YUM). DNF is a software package manager. It installs, performs updates, and removes packages on Linux distributions.

Use the following command to add and enable the official Docker CE repository:

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

Now check the downloaded Repo of Docker using the following command:

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dnf repolist -v

To list all the available docker-ce packages, use the following command:

dnf list docker-ce --showduplicates | sort -r

Install Docker CE on CentOS 8:

First, we will install the containerd.io package manually. This workaround allows you to install the latest docker-ce version.

dnf install https://download.docker.com/linux/centos/7/x86_64/stable/Packages/containerd.io-1.2.10-3.2.el7.x86_64.rpm
Install docker on CentOS 8
Install docker on CentOS 8
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Now we can proceed to install the latest version of docker-ce with the following command:

dnf install docker-ce -y

Now Enable Docker using the following command:

systemctl enable --now docker
systemctl status docker

Disable firewall to aviod any communication issue while running services in Docker container.

systemctl disable firewalld
systemctl stop firewalld

Download a small alpine docker container image to test the installation using the following command:

docker pull alpine

Check if the image is available using the following command:

docker images

We have successfully installed Docker on CentOS 8. You can now use Docker according to your need.

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