docker-minecraft-server/examples/docker-compose-forge.yml

version: "3.7"

services:
  mc:
    # FTBA support is only available in multiarch image tag
    image: itzg/minecraft-server:multiarch
    ports:
    # expose the Minecraft server port outside of container
    - 25565:25565
    environment:
      # REQUIRED for all types
      EULA: "TRUE"
      # Set server type (vs the default of vanilla)
      TYPE: FTBA
      # Use Pack ID from https://ftb.neptunepowered.org/pack/ftb-presents-direwolf20-1-12/
      FTB_MODPACK_ID: "31"
    volumes:
    # use a named, managed volume for data volume
    - mc_ftb:/data

volumes:
  # declared the named volume, but use default/local storage engine
  mc_ftb: {}