A NetworkManager script for toggling docker http proxy configuration, depending on the network your connected to.

This script exists because I need to access a private docker repository via a proxy when working for a particular client, and docker has an all-or-nothing approach to proxy configuration.

This script is triggered by NetworkManager on changes to network configuration and will enable the proxy when connecting to a particular network. In all other cases, it will disable the proxy if required.

1. Create an http_proxy.disabled file in /etc/systemd/system/docker.service.d that specifies your proxy configuration:

   [Service]
   Environment="HTTP_PROXY=http://my.proxy.server.com"
       

2. Copy toggle_proxy.sh to /etc/NetworkManager/dispatcher.d/99toggledockerproxy and make executable.
3. Edit 99toggledockerproxy so that the PROXY_DOMAIN variable is the network domain you need to use the proxy from.