services:
  # start.sh adds this when GAME_SAVE_DIR is set. group_add = the
  # folder's group, so GAME_SAVE_WRITE works when that group can write
  php:
    volumes:
      - "${GAME_SAVE_DIR}:/var/lib/omega-game"
    environment:
      GAME_SAVE_DIR: /var/lib/omega-game
    group_add:
      - "${GAME_SAVE_GID:-0}"