docker-volume-backup/test/user/docker-compose.yml

services:
  alpine:
    image: alpine:3.17.3
    tty: true 
    volumes:
      - app_data:/tmp
    labels:
      - docker-volume-backup.archive-pre.user=testuser
      - docker-volume-backup.archive-pre=/bin/sh -c 'whoami > /tmp/whoami.txt'

  backup:
    image: offen/docker-volume-backup:${TEST_VERSION:-canary}
    deploy:
      restart_policy:
        condition: on-failure
    environment:
      BACKUP_FILENAME: test.tar.gz
      BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
      EXEC_FORWARD_OUTPUT: "true"
    volumes:
      - ${LOCAL_DIR:-./local}:/archive
      - app_data:/backup/data:ro
      - /var/run/docker.sock:/var/run/docker.sock

volumes:
  app_data:
  archive: