Update Dockerfile

Dockerfile

@@ -17,5 +17,9 @@ RUN pip install flask gunicorn pymupdf tiktoken
 # Expose default port
 EXPOSE 7860
 
-# Run with Gunicorn
-CMD ["gunicorn", "-w", "4", "-b", "0.0.0.0:7860", "app:app"]
+# Run with Gunicorn (Flask / WSGI)
+CMD ["gunicorn", "app:app", \
+     "--bind", "0.0.0.0:${PORT}", \
+     "--workers", "1", "--threads", "4", "--timeout", "180", \
+     "--access-logfile", "-", "--error-logfile", "-", "--log-level", "debug", \
+     "--preload"]