使用阿里雲Docker Yum源
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
sudo yum makecache fast
sudo yum -y install docker-ce
Docker常用命令：
docker version
docker images
docker ps -a
docker rm xxx
docker rmi xxx
docker stop xxx
docker kill xxx
docker run -it --restart=always
systemctl enable docker
systemctl status docker
service docker start
service docker restart
service docker stop