Update Dockerfile for correct directory structure

Dockerfile

@@ -91,8 +91,9 @@ COPY --from=web-builder --chown=user /app/web/.next/standalone /app/web
 COPY --from=web-builder --chown=user /app/web/.next/static /app/web/.next/static
 COPY --from=web-builder --chown=user /app/web/public /app/web/public
 
-# Download NLTK data
-RUN python -c "import nltk; nltk.download('punkt'); nltk.download('averaged_perceptron_tagger')"
+# Install NLTK and download data
+RUN pip install --no-cache-dir nltk && \
+    python -m nltk.downloader punkt averaged_perceptron_tagger
 
 # Set environment variables
 ENV FLASK_APP=app.py \