Custom worker server address?

[PHLAK]

I'm creating a custom docker-compose.yaml file for my installation and find that if I change the worker service name (e.g. to authentik-worker) and start the containers, the web page shows the following message and does not work.

failed to connect to authentik backend: authentik starting

I assume this is due to the worker hostname defaulting to worker internally and am hoping there's a way to override this with an environment variable or similar. Is this possible?