services:
  backrest:
    image: garethgeorge/backrest:v1.7.3
    restart: unless-stopped
    ports:
      - 9898
    environment:
      - BACKREST_PORT=9898
      - BACKREST_DATA=/data # where it stores current state data
      - BACKREST_CONFIG=/config/config.json # where it stores backup configurations
      - XDG_CACHE_HOME=/cache # backup cache
      - TZ=${TZ}
    volumes:
      - backrest/data:/data
      - backrest/config:/config
      - backrest/config:/cache # to preserve backup cache between restarts
      - /:/userdata:ro # we mount /mnt/data to /userdata (that we want to backup)

volumes:
  backrest: 
  backrest-cache: