Update Dockerfile

Dockerfile

@@ -18,19 +18,26 @@ WORKDIR /app
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Copy the app code
+# Copy the app code and templates
 COPY app.py .
+COPY templates /app/templates/
+# If you add a static folder in the future for CSS/JS:
+# COPY static /app/static/
 
 # Switch to non-root user
 USER appuser
 
-# Expose the port Gradio will run on
+# Expose the port the app runs on (for documentation, HF handles actual mapping)
+# Gunicorn will bind to this port. Hugging Face Spaces typically expect apps on 7860.
 EXPOSE 7860
 
 # Set environment variables
-ENV GRADIO_SERVER_NAME="0.0.0.0"
-ENV GRADIO_SERVER_PORT=7860
 ENV PYTHONUNBUFFERED=1
-
-# Run the Gradio app
-CMD ["python", "app.py"]
+ENV FLASK_APP=app.py 
+# Recommended: Set FLASK_ENV to production for real deployments,
+# but gunicorn handles this role better than Flask dev server.
+# ENV FLASK_ENV=production 
+
+# Run the Flask app with Gunicorn
+# The 'app:app' means Gunicorn should look for an object named 'app' in a file named 'app.py'.
+CMD ["gunicorn", "--bind", "0.0.0.0:7860", "--workers", "2", "--timeout", "120", "app:app"]