update again the docker image

Dockerfile

@@ -19,4 +19,4 @@ RUN useradd -u 1000 appuser && chown -R appuser /code
 USER appuser
 
 # During debugging, this entry point will be overridden. For more information, please refer to https://aka.ms/vscode-docker-python-debug
-CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]
+CMD ["uvicorn", "app.py", "--host", "0.0.0.0", "--port", "7860"]