Update Dockerfile

Dockerfile

@@ -10,6 +10,11 @@ RUN pip install --upgrade pip && pip install -r requirements.txt
 
 COPY . /app
 
+# Fix Streamlit and Matplotlib permission issues
+ENV STREAMLIT_CONFIG_DIR=/app/.streamlit
+ENV MPLCONFIGDIR=/app/.config/matplotlib
+RUN mkdir -p /app/.streamlit /app/.config/matplotlib
+
 EXPOSE 7860
 
 CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0"]