mkdir -p /etc/docker

tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": 
[
   "https://docker.mirrors.ustc.edu.cn"
   "https://dockerhub.azk8s.cn",
   "http://f1361db2.m.daocloud.io",
   "https://reg-mirror.qiniu.com",
   "https://hub-mirror.c.163.com",
   "https://mirror.ccs.tencentyun.com"
  ]
}
EOF

systemctl daemon-reload
systemctl restart docker
docker info