问题：下载docker镜像超时

error pulling image configuration: download failed after attempts=6: dial tcp 202.160.128.205:443: i/o timeout

解决办法：配置daemon.json

[root@bogon aihuidi]# cat /etc/docker/daemon.json 

{
  "registry-mirrors": [
  "https://vm1wbfhf.mirror.aliyuncs.com",
  "http://f1361db2.m.daocloud.io",
  "https://hub-mirror.c.163.com",
  "https://docker.mirrors.ustc.edu.cn",
  "https://mirror.baidubce.com",
  "https://ustc-edu-cn.mirror.aliyuncs.com",
  "https://registry.cn-hangzhou.aliyuncs.com",
  "https://ccr.ccs.tencentyun.com",
  "https://hub.daocloud.io",
  "https://docker.shootchat.top",
  "https://do.nark.eu.org",
  "https://dockerproxy.com",
  "https://docker.m.daocloud.io",
  "https://dockerhub.timeweb.cloud",
  "https://docker.shootchat.top",
  "https://do.nark.eu.org"
  ]
}

重启docker

systemctl daemon-reload 
systemctl restart docker