首先需要注册一个阿里云账号，只要注册账号就可以，不用充钱购买任何阿里云服务！
打开阿里云网站https://cr.console.aliyun.com，登陆自己的阿里云账号。
然后只需要在服务器配置docker配置文件，只需要修改"ExecStart=/usr/bin/dockerd‐current ‐‐registrymirror=https://rrr9h8xt.mirror.aliyuncs.com"即可。然后重启docker 服务即可。
[root@docker~]# vim /usr/lib/systemd/system/docker.service [Unit] Description=Docker Application Container Engine Documentation=https://docs.docker.com After=network-online.target firewalld.service Wants=network-online.target [Service] Type=notify # the default is not to use systemd for cgroups because the delegate issues still # exists and systemd currently does not support the cgroup feature set required # for containers run by docker ExecStart=/usr/bin/dockerd‐current ‐‐registrymirror=https://rrr9h8xt.mirror.aliyuncs.com ExecReload=/bin/kill -s HUP $MAINPID # Having non-zero Limit*s causes performance problems due to accounting overhead # in the kernel. We recommend using cgroups to do container-local accounting. LimitNOFILE=infinity LimitNPROC=infinity LimitCORE=infinity # Uncomment TasksMax if your systemd version supports it. # Only systemd 226 and above support this version. #TasksMax=infinity TimeoutStartSec=0 # set delegate yes so that systemd does not reset the cgroups of docker containers Delegate=yes # kill only the docker process, not all processes in the cgroup KillMode=process # restart the docker process if it exits prematurely Restart=on-failure StartLimitBurst=3 StartLimitInterval=60s [Install] WantedBy=multi-user.target