docker proxy

HTTP proxy
This example overrides the default docker.service file.
If you are behind an HTTP proxy server, for example in corporate settings, you will need to add this configuration in the Docker systemd service file.

Create a systemd drop-in directory for the docker service:

sudo mkdir /etc/systemd/system/docker.service.d

Create a file called /etc/systemd/system/docker.service.d/http-proxy.conf that adds the HTTP_PROXY environment variable:

sudo vim /etc/systemd/system/docker.service.d/http-proxy.conf

[Service]
Environment="HTTP_PROXY=http://89.40.126.228:3128"

[Service]
Environment="HTTP_PROXY=http://proxy.example.com:80/"

[Service]
Environment="HTTP_PROXY=http://proxy.example.com:80/" "NO_PROXY=localhost,127.0.0.1,docker-registry.somecorporation.com"

Flush changes:
sudo systemctl daemon-reload

Verify that the configuration has been loaded:
$ systemctl show --property=Environment docker
Environment=HTTP_PROXY=http://proxy.example.com:80/

Restart Docker:
sudo systemctl restart docker