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)

更换 Docker 镜像源

sudo mkdir -p /etc/docker
sudo nano /etc/docker/daemon.json

添加国内镜像加速器

{
  "builder": {
    "gc": {
      "defaultKeepStorage": "20GB",
      "enabled": true
    }
  },
  "experimental": false,
  "registry-mirrors": [
    "https://docker.1ms.run",
    "https://register.liberx.info",
    "https://dockerpull.com",
    "https://docker.anyhub.us.kg",
    "https://dockerhub.jobcher.com",
    "https://dockerhub.icu",
    "https://docker.awsl9527.cn",
    "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",
    "https://docker.rainbond.cc"
  ]
}

然后重启 Docker：

sudo systemctl daemon-reload
sudo systemctl restart docker

编辑 /etc/resolv.conf文件

vi  /etc/resolv.conf

添加

nameserver 8.8.8.8
nameserver 114.114.114.114
nameserver 223.5.5.5