Create Dockerfile

[mekarpeles]

The Dockerfile for groovebox.org is located here:

https://github.com/mekarpeles/docker-groovebox

This tutorial (Dockerfile for spinning up a Flask micro-service w/ Postgres) seems promising. If no one else takes a crack at it, I'll get it running: https://realpython.com/blog/python/dockerizing-flask-with-compose-and-machine-from-localhost-to-the-cloud/

[mekarpeles]

For starters, in the interest of progress, perhaps it makes sense to Dockerise Postgres (and postpone Flask)