hey, copyparty dev here - I'll be upfront and warn that if you're looking for a service to do full bidirectional file syncing, with proper file tracking and versioning, then something like syncthing is a better choice. Copyparty is able to do single-direction syncing of local folders to the server pretty well (using copyparty's u2c or rclone), but that's about it.
But if you're looking for something to handle file uploads faster than many alternatives, or any of the other features listed in the readme, then I'd be happy to help if you ever get stuck somewhere :>
Awesome!! And thanks for mentioning the traefik thing; I added it to the example so maybe it'll help somebody else one day :>