Update Dockerfile

Dockerfile

@@ -4,6 +4,7 @@ FROM python:3.10-slim
 # Set environment variables
 ENV HOME=/app
 ENV STREAMLIT_HOME=/app/.streamlit
+ENV MPLCONFIGDIR=/app/.config/matplotlib  # For Matplotlib
 
 # Set working directory
 WORKDIR /app
@@ -24,8 +25,9 @@ COPY app.py .
 RUN pip install --upgrade pip && \
     pip install -r requirements.txt
 
-# Create a writable .streamlit directory
-RUN mkdir -p $STREAMLIT_HOME
+# Create all necessary directories with full permissions
+RUN mkdir -p /app/.streamlit /app/.config/matplotlib && \
+    chmod -R 777 /app/.streamlit /app/.config/matplotlib
 
 # Optional: basic Streamlit config to avoid warnings
 RUN echo "\