告别Docker请求超时之一步步排查与详细解决方案

docker: 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).
See 'docker run --help'.

{
    "registry-mirrors": ["https://docker.registry.cyou",
      "https://docker-cf.registry.cyou",
      "https://dockercf.jsdelivr.fyi",
      "https://docker.jsdelivr.fyi",
      "https://dockertest.jsdelivr.fyi",
      "https://mirror.aliyuncs.com",
      "https://dockerproxy.com",
      "https://mirror.baidubce.com",
      "https://docker.m.daocloud.io",
      "https://docker.nju.edu.cn",
      "https://docker.mirrors.sjtug.sjtu.edu.cn",
      "https://docker.mirrors.ustc.edu.cn",
      "https://mirror.iscas.ac.cn"]
  }

sudo systemctl daemon-reload
sudo systemctl restart docker

cat /etc/resolv.conf

nameserver 114.114.114.114
nameserver 8.8.8.8

https://docker.rainbond.cc/

Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
c1ec31eb5944: Pull complete 
Digest: sha256:d211f485f2dd1dee407a80973c8f129f00d54604d2c90732e8e320e5038a0348
Status: Downloaded newer image for hello-world:latest

Hello from Docker!
This message shows that your installation appears to be working correctly.

To generate this message, Docker took the following steps:
 1. The Docker client contacted the Docker daemon.
 2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
    (amd64)
 3. The Docker daemon created a new container from that image which runs the
    executable that produces the output you are currently reading.
 4. The Docker daemon streamed that output to the Docker client, which sent it
    to your terminal.

To try something more ambitious, you can run an Ubuntu container with:
 $ docker run -it ubuntu bash

Share images, automate workflows, and more with a free Docker ID:
 https://hub.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/get-started/