To use backend and frontend together you need a reverse proxy that combines both services under one origin. We provide a ready to use config for nginx and caddy. Make sure that in the backend HD_DOMAIN is set to `http://localhost:8080`. If you have docker you can use our docker-compose file that starts a nginx using `docker-compose up`. If you're on Windows or macOS you rather might want to download [caddy](https://caddyserver.com/) and start it using `caddy run` in this directory.