Update Dockerfile

Dockerfile

@@ -21,5 +21,5 @@ COPY --chown=user . .
 # Command to run the application.
 # Hugging Face Spaces expects the app to listen on port 7860.
 # The command points to the `api_app` object inside the `api/main.py` file.
-CMD ["uvicorn", "api.main:api_app", "--host", "0.0.0.0", "--port", "7860"]
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]