How To Install docker on CentOS 7
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.