Docker安装
如下六条语句,逐行运行
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
# 添加镜像
sudo yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
sudo yum install docker-ce
启动docker服务
systemctl enable docker
systemctl start docker
systemctl restart docker