Update to resolve deployment issue

Dockerfile

@@ -5,6 +5,8 @@ FROM python:3.11-slim
 RUN useradd -m -u 1000 user
 USER user
 ENV PATH="/home/user/.local/bin:$PATH"
+ENV FLASK_APP=app.py
+ENV FLASK_ENV=production
 
 # Set working directory for app
 WORKDIR /app
@@ -19,5 +21,6 @@ RUN pip install --no-cache-dir --upgrade -r requirements.txt
 COPY --chown=user . .
 
 # Run gunicorn server on port 7860
-# Format: gunicorn -b host:port module_name:app_instance
-CMD ["gunicorn", "-b", "0.0.0.0:7860", "app:app"]
+# CMD ["gunicorn", "-b", "0.0.0.0:7860", "app:app"] # Format: gunicorn -b host:port module_name:app_instance
+
+CMD ["gunicorn", "--log-level", "debug", "--bind", "0.0.0.0:7860", "app:app"] # Use 0.0.0.0 to bind to all interfaces