Debug Python / Django Docker-Compose (Netbox_QRCode)

[LHBL2003]

There is a Netbox project for documenting networks and devices. You can integrate plugins there. Someone had built a small plugin (Netbox_QRCode), which I would like to develop further. He has built his development with Docker Compose, which I find good and interesting. I would like to debug this. Unfortunately, I am reaching my limits and could therefore use some help.

I manage to get the Docker Compose to run. But I have no idea how to write the Launch.json / tasks.json.

It is about this project.
https://github.com/netbox-community/netbox-qrcode

Thereby 4 containers are started:
develop-Worker = Contains the plugin
develop-netbox = Contains the main program Netbox
postgres:12 = A database for Netbox
redis:5-alpine = Something for Netbox

I have already asked and described here how to get the website up and running:
netbox-community/netbox#16637

Also at the plugin developer, where I also tried some launch.json and tasks.json combinations.
netbox-community/netbox-qrcode#76

But I just don't know what to do.

Does anyone have any ideas for me or know how to create suitable files?
Thank you very much