Add Docker Compose support

[rodrigobdz]

Fixes #614.

Changelog

Add

• Add missing instructions on how to build Docker images using Docker Compose.
• Add Docker Compose file compose.yaml with support for .env.local. Current Dockerfile does not support .env.local.

[nsarrazin]

I'd prefer to have deployment examples in the docs rather than in the repo directly as everyone might have different deployments. Maybe we could add it to the wiki wdyt?

[rodrigobdz]

Given that the readme is already too long, I agree. Although to be consistent, it would be advisable to move also the Quickstart and Setup sections from the readme to the wiki.

I encountered several issues in these two sections due to my ARM-based architecture and suppose several users might have faced this. That's the motivation behind this ticket.

[tino]

Note that this isn't going to work for with the local docker file. The current .env file is invalid for docker compose due to the multiline stuff with backticks.

[rodrigobdz]

@tino This command should ignore the .env to avoid errors with Docker Compose:

docker compose --env-file /dev/null up --build