Moving the --theme dark flag from Dockerfile to docker-compose.yml

[Keavon]

Since not everyone wants the dark theme in the AUTOMATIC1111 web UI, wouldn't it make more sense to move the --theme dark flag into the environment variables set in docker-compose.yml? I currently track your repository but I have one commit that I rebase which just changes those environment variables in docker-compose.yml (removing --allow-code --medvram and adding --api for my purposees). Not having to rebase two files would make it slightly easier to maintain. Thanks for considering.

[AbdBarho]

@Keavon I removed it in #205

that being said, you don't need an extra commit that you have to always rebase for this, you can leave the original docker compose file as is, and create a docker-compose.override.yml and put this in it:

services:
  auto:
    environment:
      - CLI_ARGS=--api # your args here
    # you can even override the entire command if you want to
    command: [python3, -u, ../../webui.py, --listen, --port, 1111, --beep, --beep, --iamasheep]

[Keavon]

Awesome, that's very helpful. Thank you for that tip! And I see that that override also .gitignored, handy.