Update Dockerfile

Dockerfile

@@ -15,15 +15,17 @@ COPY requirements.txt .
 COPY app.py .
 COPY README.md .
 
-# Create /data directory
-RUN mkdir -p /data && chmod -R 777 /data
+# Create /data and /data/files directories with permissions
+RUN mkdir -p /data/files /data/nltk_data && chmod -R 777 /data
 
 # Install Python dependencies
 RUN pip install --no-cache-dir -r requirements.txt
 
+# Pre-download NLTK data
+RUN python -m nltk.downloader -d /data/nltk_data punkt stopwords
+
 # Expose port
 EXPOSE 7860
 
 # Run the Gradio app
-CMD ["python", "app.py"]
-RUN mkdir -p /data && chmod -R 777 /data
+CMD ["python", "app.py"]