docker安装

1.安装系统工具

sudo yum install -y yum-utils \
  device-mapper-persistent-data \
  lvm2

2.添加yum仓库

sudo yum-config-manager \
      --add-repo \
     http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

3.安装docker

sudo yum -y install docker-ce

4.开启docker服务

sudo systemctl start docker

5.设置开机启动

#设置开机启动
sudo systemctl enable docker