Centos7 安装 docker

1.升级插件

sudo yum update -y

2.安装插件包

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

3.添加源

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

4.查看源内的docker

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

5.安装最稳定版docker

sudo yum install docker-ce 

6. 卸载docker

 sudo yum remove docker  docker-common docker-selinux docker-engine

7. 检查是否安装成功

 docker version

8. 设置开机启动

sudo systemctl start docker
sudo systemctl enable docker