`docker stop` on API container hangs

Steps to reproduce

docker stop funkwhale_api
# Docker sends SIGTERM
# Docker waits for 10 seconds by default, then send SIGKILL to the process.

What happens?

I think it is because the shell script doesn't exec into gunicorn but runs it as a subprocess. So gunicorn run as exec gunicorn ... might fix this.

I tried SIGTERMing the shell process with htop, which does nothing (because there is no shell "trap").

But SIGTERMing the python master process effectively ends the python processes.