http://www.yunweipai.com/archives/20727.html?utm_source=tuicool&utm_medium=referral
vi /lib/systemd/system/docker.service
ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock --registry-mirror=https://regis
try.docker-cn.com
也可选用网易的镜像地址：http://hub-mirror.c.163.com
{
"registry-mirrors": ["http://hub-mirror.c.163.com"]
}
systemctl daemon-reload
systemctl restart docker
systemctl status docker
