重启
sudo service docker restart

安装
https://www.jianshu.com/p/fe5f3cd3efbc

https://www.jianshu.com/p/9ac6d604a8e7

docker安装

yum search docker
#安装命令
yum install -y docker

docker启动

#启动命令
systemctl start docker
#查看状态
systemctl status docker
systemctl stop docker
systemctl restart docker

加入开机启动：
systemctl enable docker