Update Dockerfile

Dockerfile

@@ -21,6 +21,5 @@ RUN pip install --no-cache-dir -r requirements.txt
 # Copy app code and model
 COPY app.py naxi_lowlight.keras /app/
 
-# Start Streamlit app
-# --server.address=0.0.0.0 is needed to make the app accessible from outside the container.
-CMD ["streamlit", "run", "app.py"]
+# The CMD command MUST specify port 7860 for Hugging Face Spaces
+CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0"]