Update Dockerfile

Dockerfile

@@ -12,4 +12,4 @@ RUN pip install --no-cache-dir --upgrade -r /requirements.txt
 RUN apt-get update && apt-get install -y libgl1 && apt-get install -y python3-opencv
 
 # Start the FastAPI app on port 7860, the default port expected by Spaces
-CMD ["fastapi", "dev", "app.py"]
+CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]