windows玩docker的时候，经常碰到这种问题：
Error response from daemon: Get https://registry-1.docker.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
Error response from daemon: Get https://registry-1.docker.io/v2/openstf/stf/manifests/latest: Get https://auth.docker.io/token?scope=repository%3Aopenstf%2Fstf%3Apull&service=registry.docker.io: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
原因是因为连接国内下Docker镜像速度缓慢超时，很正常，歪果仁就是这么的不友好
国内Dock Hub镜像地址
DaoCloud 加速器
DaoCloud是国内第一家Dock Hub加速器提供商
网址：
https://dashboard.daocloud.io/mirror
注册后进入：https://www.daocloud.io/mirror#accelerator-doc
配置重启即可