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Pack changedetection.io into a QNAP QPKG. The QPKG itself is a lightweight wrapper: it runs the official dgtlmoon/changedetection.io Docker image via Container Station, making the same .qpkg compatible with all architectures (x86_64 / ARM).

1. Push tag: When a new version is released upstream (e.g., 0.50.7), tag it in this repository:

   git tag v0.50.7
   git push origin v0.50.7

   • Tag format: v<upstream_version>, corresponding to the Docker image tag <upstream_version>.
   • If you need to repackage the same upstream version, add a suffix: v0.50.7-2 (the QPKG version will be 0.50.7-2, while the image remains 0.50.7).

2. CI Build: GitHub Actions (.github/workflows/build-qpkg.yml) will automatically:

   • Build using the official QDK qbuild tool.
   • Write the version into qpkg.cfg and the image tag into shared/.image_tag.
   • Create a GitHub Release and attach the .qpkg file.

   (Pushing to main only builds the artifact for testing and does not publish a Release.)

3. Download & Install: Download the .qpkg from the Release → QTS App Center → Install Manually.

   • Container Station must be installed first.
   • Unsigned QPKG: If QTS refuses to install, go to App Center settings and check "Allow installation of applications without a valid digital signature".

• Web UI: http://<NAS IP>:5000 (The "Open" button in App Center will link directly to it).
• Data Directory: <Default volume>/.changedetection.io (mounted to /datastore inside the container). Uninstalling the QPKG will not delete your data; reinstalling will reconnect to it.
• Configuration File: <QPKG installation directory>/changedetection.conf. You can modify PORT, DATA_DIR, PLAYWRIGHT_DRIVER_URL (sockpuppetbrowser for JS rendering), and EXTRA_DOCKER_OPTS. Apply changes by disabling and then enabling the App in App Center.
• Upgrade: Installing a newer version .qpkg will automatically pull the new image and rebuild the container when started. Old images can be manually cleaned up in Container Station.

.github/workflows/build-qpkg.yml   CI: qbuild + Release
qpkg/
  qpkg.cfg                         QPKG metadata (version injected by CI)
  package_routines                 Installation/uninstallation hooks
  icons/                           App Center icons
  shared/
    changedetection.sh             Service script (start/stop/restart/status/cleanup)
    changedetection.conf.sample    User configuration template
    .image_tag                     Docker image tag (injected by CI; defaults to latest in repo)

This repository serves as a template: replace the name/summary in qpkg.cfg, the image and port in the service script, and the icons. The CI workflow will work out-of-the-box (push tag → auto build → download & install from Release).