Let me take you on an adventure.
Today I needed to access a service inside a corporate network, but the service is firewalled from external use, and also from access via the VPN.
The suggestion was to use a machine already internal to the network and some port forwarding to get around this restriction. Ahah, I can get around this with a small container on the OpenShift cluster I thought.
So I need a tiny container just for forwarding ports. Google turned up - https://github.com/derkork/socat-openshift.