Docker设置代理：docker pull 代理

方式一：daemon.json (推荐)

Daemon configuration
You may configure proxy behavior for the daemon in the daemon.json file, or using CLI flags for the --http-proxy or --https-proxy flags for the dockerd command. Configuration using daemon.json is recommended.

{
  "proxies": {
    "http-proxy": "http://proxy.example.com:3128",
    "https-proxy": "https://proxy.example.com:3129",
    "no-proxy": "*.test.example.com,.example.org,127.0.0.0/8"
  }
}

After changing the configuration file, restart the daemon for the proxy configuration to take effect: sudo systemctl restart docker
参考文章：https://docs.docker.com/engine/daemon/proxy/

方式二：systemd 环境变量

docker pull /push 的代理被 systemd 接管，所以需要设置 systemd

mkdir -p /etc/systemd/system/docker.service.d
touch /etc/systemd/system/docker.service.d/proxy.conf
vi /etc/systemd/system/docker.service.d/proxy.conf

编辑proxy.conf文件

# proxy.conf
[Service]
Environment="HTTP_PROXY=http://172.30.172.136:4780"
Environment="HTTPS_PROXY=http://172.30.172.136:4780"
Environment="NO_PROXY=localhost,127.0.0.1,.example.com,172.16.0.0/12"

重启docker服务

sudo systemctl daemon-reload
sudo systemctl restart docker
# 可以看到设置的环境变量
sudo systemctl show docker | grep Environment

参考文章：https://neucrack.com/p/286