Refactor Docker setup

[rvanasperen]

This PR refactors the (in my respectful opinion) shoddy Docker setup to something more practical. There's an easy Dockerless setup for people to use already. If people do want to use Docker, one can assume those people have some technical know-how already.

The old setup creates a huge Docker image by copying everything over, convoluted by adding a redundant dependency on make into the mix.

The new setup uses Docker Compose (provided by Docker out-of-the-box nowadays) using a lightweight Nginx container instead, using volume mounting, and not reliant on make.

[alex-taxiera]

I like this a lot, but a few things:

1. Remove the "fixes" for local art, it was not the correct way to fix the issue.
2. I think you should undo the formatting changes to the README.
3. I would add docker-compose.override.yml to the .gitignore, I would use this personally.

This compose file is working great though, no more wasted time copying files :)

[rvanasperen]

@alex-taxiera Good point. I reverted the changes to the readme and the local art fix I made.

Do you know what the correct fix is for the local art? Is that already present in the main branch? I see some PRs open for it, but I'm unaware of what the correct fix would be.

[alex-taxiera]

Do you know what the correct fix is for the local art? Is that already present in the main branch? I see some PRs open for it, but I'm unaware of what the correct fix would be.

I opened #52 which I believe is the "best" fix based on this comment