How To Install docker on CentOS 7

In this tutorial we learn how to install docker on CentOS 7. docker is Automates deployment of containerized applications

Introduction

In this tutorial we learn how to install docker on CentOS 7.

What is docker

Docker is an open-source engine that automates the deployment of any application as a lightweight, portable, self-sufficient container that will run virtually anywhere. Docker containers can encapsulate any payload, and will run consistently on and between virtually any server. The same container that a developer builds and tests on a laptop will run at scale, in production*, on VMs, bare-metal servers, OpenStack clusters, public instances, or combinations of the above.

We can use yum or dnf to install docker on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install docker.

Install docker on CentOS 7 Using yum

Update yum database with yum using the following command.

sudo yum makecache

After updating yum database, We can install docker using yum by running the following command:

sudo yum -y install docker

Install docker on CentOS 7 Using dnf

If you don’t have dnf installed you can install DNF on CentOS 7 first. Update yum database with dnf using the following command.

sudo dnf makecache

After updating yum database, We can install docker using dnf by running the following command:

sudo dnf -y install docker

How To Uninstall docker on CentOS 7

To uninstall only the docker package we can use the following command:

sudo dnf remove docker

References

Summary

In this tutorial we learn how to install docker on CentOS 7 using yum and dnf.