What is Docker | How to Install Docker in CentOS / RHEL 7 with Screenshot | linuxtopic

What is docker ?
What is Docker definition ?

Docker Installation - What is Docker

Tags: docker, docker tutorial, docker hub, docker container, docker compose, docker networking, docker nginx, docker images, docker linux, docker basic commands, run docker, run docker image, run docker container, linuxtopic

Docker is an open source containerization technology that is designed to make it easier to create, deploy, and run applications using containers.


To install some dependency package

yum install -y yum-utils device-mapper-persistent-data lvm2

To Install repository

yum install epel-releaseORyum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

Verify

cat /etc/yum.repos.d/docker-ce.repo

To Install Docker on CentOS/RHEL 7

yum install docker

To list package

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

To Start Docker Service on CentOS 7

systemctl start dockersystemctl status dockersystemctl enable docker

Verify Docker Version and info Docker

docker version

docker --version

docker info

To help docker

docker --help

To Remove Docker

check docker package on your system, if already installed remove it and install a fresh one

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

yum remove docker-*

To get more info about docker - Click here