Previously, the Dockerfile tried to copy the instance/ directory which is
gitignored and doesn't exist in fresh clones. This caused deployment to fail
with "instance/: not found" error.
Changes:
- Add docker-entrypoint.sh script to auto-generate JWT keys if missing
- Install openssl in container for key generation
- Remove COPY instance/ from Dockerfile (no longer needed)
- Create instance/ directory during build
- Set ENTRYPOINT to run initialization script before starting Gunicorn
This allows the application to deploy successfully on fresh clones without
requiring manual JWT key generation.
Fixes deployment issue on production servers.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
