Simplify Docker Deployment

I am trying to do a deployment on Rancher w/ Traefik and the whole deployment is a bit overwhelming. It currently takes 6 containers to spin up Funkwhale. To me that sounds like a lot, other applications (e.g. Nextcloud) can usually make this into three or less containers. I am not saying that we combine Redis or Postgres into the main Funkwhale image, those are perfectly fine to be supported containers.

I would like to see a containers of:

• Funkwhale (w/ frontend, api, celery worker and celery beat)
• Postgres
• Redis

Funkwhale appears to be a great alternative to .*sonic apps and if we simplify the Docker deployment strategy there could be more adoption.