Feat: Disabling Mods in Generic Packs

[azunaVT]

Adding the ability to disable mods for generic packs in start-setupModpack through a DISABLE_MODS environment variable.

Example of usage for something like running GTNH 2.7.2 with CrucibleMC, where lwjgl3ify and archaicfix need to be disabled for the pack to work:

  gtnh:
    image: itzg/minecraft-server
    container_name: gtnh
    tty: true
    stdin_open: true
    restart: unless-stopped
    environment:
      TYPE: CRUCIBLE
      VERSION: 1.7.10
      CRUCIBLE_RELEASE: staging-8ae5051
      GENERIC_PACKS: GT_New_Horizons_2.7.2_Server_Java_17-21
      GENERIC_PACKS_SUFFIX: .zip
      GENERIC_PACKS_PREFIX: https://downloads.gtnewhorizons.com/ServerPacks/
      DISABLE_MODS: |
        lwjgl3ify-2.1.5.jar
        archaicfix-0.7.4.jar
      ENABLE_QUERY: true
      EULA: TRUE
      MEMORY: 8G
      JVM_OPTS: -Dfml.readTimeout=180 @crucible-gtnh-java9args.txt
    ports:
      - '25565:25565'
    volumes:
      - ./gtnh/server:/data
      - ./gtnh/crucible-gtnh-java9args.txt:/data/crucible-gtnh-java9args.txt
      - ./gtnh/mods.txt:/data/mods.txt

[itzg]

Thanks. Now I see what you meant with the comment #3144 (comment)

Please also add a brief description of the variable to the docs at https://github.com/itzg/docker-minecraft-server/blob/master/docs/mods-and-plugins/index.md?plain=1#L61

[itzg]

Super close 😀

[itzg]

Thanks!