Hey Tom,
as far as I’m aware, the docker container doesn’t rebuild the code on restarting with docker-compose -
try docker-compose build --no-cache ors-app to make sure it rebuilds.
I’m also unsure whether the graphs have to be rebuilt when changing stuff in the encoders…
As for testing whether it’s working, I’d suggest logging something in the function in question - that should at least give you some feedback to whether you are running the code you should be running 
Best regards,
Jakob