官网下载安装说明
1.卸载旧版本 sudo yum remove docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-selinux docker-engine-selinux docker-engine 2.设置存储库 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 3.安装docker社区版 sudo yum install docker-ce 4.启动关闭docker systemctl start docker