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

[Service]
Environment="HTTP_PROXY=http://192.168.9.9:8080/"
Environment="HTTPS_PROXY=http://192.168.9.9:8080/"
Environment="NO_PROXY=localhost,127.0.0.1"

重启服务
sudo systemctl daemon-reload
sudo systemctl restart docker

留待后查，同时方便他人
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