Create a Dockefile for deployment and docker-compose file for development.

[thepsalmist]

Currently the web-tools apps are default to deploying to Dokku via Heroku buildpacks.
We're currently running Heroku buildpack 20, that no longer support python 3.8 and have since deprecated python 3.9 as per this
while the web-tools current python runtime version is python-3.8.18.

We need to create a Dockerfile that allows us to deploy to Dokku using Dockerfile deployment, as we plan for an audit and possible upgrade of the web-tools to the python 3.9 and python 3.10
The Dockefile should also allow us streamline the deployment process using Github Actions.