Thursday, April 20, 2017

Docker behind a proxy

Docker is a useful tool in my toolbox. I especially recommend the remnux contributions by Lenny Zeltser. Recently I needed a VM with an Ubuntu guest OS to run docker instances of container but the issue was that the pull had to go through a authenticated proxy.

Docker has given this scenario thought and this is what I did:

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

In this file you put:

Flush the changes:
sudo systemctl daemon-reload

Test if it worked:
sudo systemctl show --property=Environment docker

This should result in the proxy you entered

Restart docker
sudo systemctl restart docker

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