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Configuring Docker

  1. Create the daemon.json file to configure Docker.
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    sudo mkdir -p /etc/docker
sudo vim /etc/docker/daemon.json

    Content of the daemon.json file:

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    {
  "registry-mirrors": [
    "https://dockerhub.azk8s.cn",
    "https://docker.mirrors.ustc.edu.cn",
    "http://hub-mirror.c.163.com",
    "https://k8s.gcr.io",
    "https://github-releases.githubusercontent.com",
    "https://ustc-edu-cn.mirror.aliyuncs.com"
  ],
  "insecure-registries": [
    "registry.me:5000",
    "http://docker.mirrors.ustc.edu.cn",
    "https://k8s.gcr.io",
    "https://github-releases.githubusercontent.com",
    "https://registry-1.docker.io"
  ],
  "exec-opts": [
    "native.cgroupdriver=systemd"
  ]
}
  2. Create the http-proxy.conf file to configure the proxy. Skip this step if a proxy has been configured.
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    sudo mkdir -p /etc/systemd/system/docker.service.d
sudo vim /etc/systemd/system/docker.service.d/http-proxy.conf

    http-proxy.conf configuration template (ensure that the proxy settings are correct):

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    [Service]  
Environment="HTTP_PROXY=http://proxy.example.com:8080"  
Environment="HTTPS_PROXY=http://proxy.example.com:8080"  
Environment="NO_PROXY=localhost,127.0.0.1,docker-registry.example.com"
    • Replace proxy.example.com with the actual proxy server address.
    • NO_PROXY indicates the addresses that do not use a proxy.
  3. Restart the Docker service.
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    sudo systemctl daemon-reload  
sudo systemctl restart docker