Fix Docker Container Startup and Health Check

[kaissb]

Branch: feature/0.1.1-fix-docker-startup
Version: v0.1.1 — Gate Completion

Build

1. Diagnose container exit cause (missing config, wrong CMD, unwritable paths).
2. Ensure ENTRYPOINT ["oberwatch"] and CMD ["serve"] are set.
3. Add HEALTHCHECK directive to Dockerfile.
4. Create /data directory with correct permissions.
5. Update landing website with proper docker run command including admin token.

Tests

• Integration (scripts/test-docker-run.sh): build image, run container, verify health endpoint responds.

Commit message

fix: Docker container startup and health check

- Ensure ENTRYPOINT and CMD are properly set
- Add HEALTHCHECK to Dockerfile
- Create /data directory with proper permissions
- Update docs with proper run command including admin token