Disable the gunicorn control socket in the Docker image

Gunicorn 25.1+ creates a control socket under $HOME/.gunicorn, which
fails in the read-only container without a home directory and logs
"Control server error". The socket is not used.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Dockerfile

@@ -39,4 +39,4 @@ RUN python -m compileall -q max
 USER max
 
 ENTRYPOINT ["./entrypoint.sh"]
-CMD ["gunicorn", "-w", "1", "-b", "0.0.0.0:8000", "max.app:app"]
+CMD ["gunicorn", "-w", "1", "-b", "0.0.0.0:8000", "--no-control-socket", "max.app:app"]