What would be a good design pattern to put these dashboards behind auth? I suppose since they're static files you could just serve them with something like FastAPI or Spring Boot and have your CI/CD refresh the static files throughout the day on shared storage?
If you're putting these behind a reverse proxy (nginx, etc.) you can just setup client certificate authentication by using your own locally generated CA or by using something like Vault for UI-based certificate generation. When you visit this site with a certificate installed on your device, it will authenticate successfully, and for those who do not have a correct certificate installed, a "No certificate presented" error will be shown.
