feat: standalone docker mode (draft only)

[puehringer]

Developer Checklist (Definition of Done)

Issue

• All acceptance criteria from the issue are met
• Tested in latest Chrome/Firefox

UI/UX/Vis

• Requires UI/UX/Vis review
  • Reviewer(s) are notified (tag assignees)
  • Review has occurred (link to notes)
  • Feedback is included in this PR
  • Reviewer(s) approve of concept and design

Code

• Branch is up-to-date with the branch to be merged with, i.e., develop
• Code is cleaned up and formatted
• Unit tests are written (frontend/backend if applicable)
• Integration tests are written (if applicable)

PR

• Descriptive title for this pull request is provided (will be used for release notes later)
• Reviewer and assignees are defined
• Add type label (e.g., bug, feature) to this pull request
• Add release label (e.g., release: minor) to this PR following semver
• The PR is connected to the corresponding issue (via Closes #...)
• Summary of changes is written

Summary of changes

• Showcase of a standalone Docker mode for any visyn_* application. This even works with a single Docker image as we can serve the bundle directly from FastAPI. This works by simply pushing the backend (+ frontend bundle) as Docker image to GHCR.
• Notes
  • this is not using our secure base images (which are private), such that the image is larger and less secure as the hardened version. Building images via our normal CI/CD pipeline will use secure images.
  • this is not using our CI/CD pipelines as defined in github-workflows. In the future, we might want to take the reusable bits and move them there.

Screenshots

Additional notes for the reviewer(s)

To test, simply run docker compose -f ./deploy/standalone/docker-compose.yml up and you should see the application running at http://localhost:9000/.

Thanks for creating this pull request 🤗