Update Dockerfile

Dockerfile

@@ -20,9 +20,18 @@ COPY requirements.txt .
 # Install Python dependencies
 RUN pip install --no-cache-dir -r requirements.txt
 
+# Pre-download NLTK data
+RUN python -m nltk.downloader punkt averaged_perceptron_tagger stopwords words wordnet omw-1.4
+
+# Create directory for NLTK data with proper permissions
+RUN mkdir -p /usr/local/share/nltk_data && chmod 777 /usr/local/share/nltk_data
+
 # Copy the rest of the application
 COPY . .
 
+# Set environment variable to specify NLTK data path
+ENV NLTK_DATA=/usr/local/share/nltk_data
+
 # Expose the port Streamlit runs on
 EXPOSE 7860