一、环境
*centos7.6
二、安装步骤
*设置yum源
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo #阿里云yum源
*安装
yum install -y docker
*查看docker是否安装成功
yum list installed |grep docker
*启动docker服务(并设置开机自启)
systemctl start docker.service
systemctl enable docker.service
原文：https://www.cnblogs.com/carl1518/p/14817180.html