centos docker 安装

### docker yum-util 提供yum-config-manager功 devicemapper驱动依赖
sudo yum install -y yum-utils  device-mapper persistent-data lvm2
  
### 源切换  
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
 
 ### doccker 安装   
sudo yum install docker-ce docker-ce-cli containerd.io

### docker 启动
sudo systemctl start docker
sudo systemctl enable docker

### docker 版本
docker version