1. 安装依赖
dnf install https://download.docker.com/linux/centos/8/x86_64/stable/Packages/containerd.io-1.4.3-3.1.el8.x86_64.rpm
dnf install https://download.docker.com/linux/centos/8/x86_64/stable/Packages/docker-ce-20.10.2-3.el8.x86_64.rpm
dnf install https://download.docker.com/linux/centos/8/x86_64/stable/Packages/docker-ce-cli-20.10.2-3.el8.x86_64.rpm
2.启动 docker
systemctl start docker
3.查看 docker 版本信息
docker -v
4.设置开机自动启动
systemctl enable --now docker
5.(可以不用配置，优化加速镜像下载)docker 阿里云加速 参考https://help.aliyun.com/document_detail/60750.html
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://这里是阿里云分配前缀.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker
