linux下安装docker

1，尽量在centos7和6下面安装，8已经寿终正寝

2，运行如下命令

yum update
yum install epel-release -y
yum clean all
yum list
yum install docker-io -y
systemctl start docker
docker -v

• docker即可安装成功。

3，设置docker开机启动

systemctl enable docker