Update Dockerfile

Dockerfile

@@ -16,4 +16,4 @@ RUN pip install --no-cache-dir --upgrade -r ./requirements.txt
 
 # Start the FastAPI app on port 7860, the default port expected by Spaces
 # CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]
-CMD ["gunicorn", "--worker", "1", "bind=0.0.0.0:8000", "--log-level", "warning", "main:app"]
+CMD ["gunicorn", "--workers", "1", "bind=0.0.0.0:8000", "--log-level", "warning", "main:app"]