Python base image for PE

This includes:

1. ubi8-minimal
2. pipenv
3. some structure from the ubi8/python-38 container

It is intended to be used for running python workloads, and as a basis for packaging and distributing python code à la hello-python

Manually trigger jobs

Submit a POST to

https://api.github.com/repos/CUB-OIT-PE/ubi8-min-python/dispatches

with a body of

{
"event_type": "bump",
"client_payload": {}
}

or { "event_type": "build", "client_payload": {} }