Fix: Change port to 7860 for Hugging Face Spaces

Dockerfile

@@ -21,7 +21,7 @@ COPY mnist_cnn_model.h5 .
 COPY website/ ./website/
 
 # Expose port
-EXPOSE 5000
+EXPOSE 7860
 
 # Run the Flask app
 CMD ["python", "app.py"]

app.py

@@ -370,5 +370,6 @@ def serve_files(filename):
 if __name__ == '__main__':
     if model is None:
         print("⚠ Warning: Model could not be loaded. Predictions will fail.")
-    print("🚀 Starting DigitVision server on http://0.0.0.0:5000")
-    app.run(host='0.0.0.0', port=5000, debug=False)
+    port = int(os.environ.get('PORT', 7860))
+    print(f"🚀 Starting DigitVision server on http://0.0.0.0:{port}")
+    app.run(host='0.0.0.0', port=port, debug=False)