version: '3'
services:
  borg:
    image: toastie89/borg 
    build:
      context: ./build
      args:
        ALPINE_VER: 3.19.1
        BORG_VER: =1.2.7-r0

    container_name: borg 
    hostname: borg 
    volumes:
      - ${VOLUME_SOURCE}:/mnt/source:ro         # backup source
      - ${VOLUME_TARGET}:/mnt/target:rw         # backup target
      - ./data/.config/borg:/root/.config/borg  # config and keyfiles
      - ./data/.cache/borg:/root/.cache/borg    # checksums used for deduplication
      - ./scripts:/opt/scripts                  # scripts run by cron and helper 
    environment:
      - TZ=${TZ}
      - PROM_URL=${PROM_URL}
      - BORG_HOSTNAME=${BORG_HOSTNAME}
      - BORG_PASSPHRASE=${BORG_PASSPHRASE}
      - BORG_REPO=${BORG_REPO}
      - BORG_SOURCE_PATH=${BORG_SOURCE_PATH}
      - BORG_RETENTION=${BORG_RETENTION}
      - CRON=${CRON}