How to make docker pull using a socks5 proxy

http-proxy.conf.md

Create the config file:

mkdir -p /etc/systemd/system/docker.service.d && \
vi /etc/systemd/system/docker.service.d/http-proxy.conf

Put up the configs:

[Service]
Environment="HTTP_PROXY=socks5://127.0.0.1:8080"
Environment="HTTPS_PROXY=socks5://127.0.0.1:8080"

Flush changes:

sudo systemctl daemon-reload

Verify that the configuration has been loaded:

sudo systemctl show --property Environment docker

Restart Docker:

sudo systemctl restart docker