安装 docker 依赖包

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

设置阿里云仓库

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

安装 containerd.io

wget https://mirrors.aliyun.com/docker-ce/linux/centos/7/x86_64/stable/Packages/containerd.io-1.2.13-3.2.el7.x86_64.rpm
yum install ./containerd.io-1.2.13-3.2.el7.x86_64.rpm

安装 Docker

yum install docker-ce docker-ce-cli

启动、测试 Docker

systemctl start docker
docker run hello-world