cat /etc/systemd/system/docker.service.d/http-proxy.conf
[Service]
Environment="HTTP_PROXY=http://xx.xx.xx.xx:xxxx/" "HTTPS_PROXY=http://xx.xx.xx.xx:xxxx/" "NO_PROXY=localhost,127.0.0.1,xx.xx.xx.xx"
sudo systemctl restart docker
https://blog.csdn.net/u013948858/article/details/78429954