docker最简安装

系统：CentOS7

# 安装yum-config-manager
sudo yum install yum-utils -y
# 安装 Docker 官方源
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo      
# 更新源 
sudo yum makecache fast  
#  安装 
sudo yum install docker-ce -y

systemctl enable docker
# 启动docker
systemctl start docker