【Docker】Docker入门系列

Get Docker Engine. (CentOs) 

https://docs.docker.com/install/linux/docker-ce/centos/#prerequisites

Step1: uninstall all old versions. （如果安装过，删除旧版本）

$ sudo yum remove docker \ docker-client \ docker-client-latest \ docker-common \ docker-latest \ docker-latest-logrotate \ docker-logrotate \ docker-engine

Step2: set up the repository. (设置 yum 仓库）

$ sudo yum install -y yum-utils device-mapper-persistent-data lvm2 $ sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

Step3: intall docker engine - community

$ sudo yum install docker-ce docker-ce-cli containerd.io

Step4: Start Docker.

$ sudo systemctl start docker

 Step5: Verify the Docker Engine - Community is intalled  correctly by running the hello-world image.

$ sudo docker run hello-world