Make the Docker Kafka more configurable

[slifty]

Task

Description

We have a Dockerized kafka setup, but things like port and hostname are all hard coded in the docker-compose. That's fine for now, but I imagine we will want to make it easier for someone to configure particular docker-compose settings.

As we start to use this I imagine it will become more clear what kinds of settings need to be configurable, and exactly how we would like to enable that configuration (for instance root level .env might not be appropriate, since in theory the Dockerized Kafka is not a required approach)

Relevant Resources / Research

• https://docs.docker.com/compose/environment-variables/

Related Issues

None yet.