Aliyun’s ubuntu server, equipped with Docker, wanted to pull a mirror image of a website, but there was a network problem and it could not be downloaded.

  docker, question

The error prompts are:

Get dial tcp: lookup on read udp i/o timeout
Network timed out while trying to connect to You may want to check your internet connection or if you are behind a proxy.
 I have tried vpn and ss, but it is useless. Who can teach me how to do it?

The speed with which the official Docker Hub is mirrored by DaoCloud is really good. The command is simpledao pull nginx:latest.
Also, it is not useful to pull the mirror image on Docker Hub.docker pull nginx:latestIs this an order? Why wget?