volumes:
  - name: obsidian
    host:
      path: /obsidian
  - name: backup
    host:
      path: /backup

steps:
  nightly-backup:
    image: alpine
    volumes:
      - name: obsidian
        path: /obsidian
      - name: backup
        path: /backup
    commands:
      - tar czf /backup/obsidian-$(date +%F).tar.gz /obsidian
    when:
      event: [ manual, push, cron ]
      cron: nightly-backup