docker安装文档
yum remove docker \ docker-client \ docker-client-latest \ docker-common \ docker-latest \ docker-latest-logrotate \ docker-logrotate \ docker-engine;
yum install -y yum-utils # 设置系统安装docker的网址 yum-config-manager \ --add-repo \ https://download.docker.com/linux/centos/docker-ce.repo
yum install docker-ce docker-ce-cli containerd.io # 设置开机自启动 systemctl enable docker