feat(chart): add Helm chart for deploying Label Studio with PostgreSQL (#152)

* feat(chart): add Helm chart for deploying Label Studio with PostgreSQL

* feat(milvus): update Milvus configuration to use URI and remove deprecated host/port settings

scripts/images/backend-python/Dockerfile

@@ -31,6 +31,10 @@ COPY runtime/datamate-python/pyproject.toml runtime/datamate-python/poetry.lock*
 RUN --mount=type=cache,target=$POETRY_CACHE_DIR \
     poetry install --no-root --only main
 
+# Download NLTK data
+RUN python -c "import nltk; nltk.download('punkt_tab', download_dir='/usr/local/nltk_data')"
+ENV NLTK_DATA=/usr/local/nltk_data
+
 # Copy the rest of the application
 COPY runtime/datamate-python /app
 
@@ -40,4 +44,4 @@ RUN chmod +x /docker-entrypoint.sh || true
 # Expose the application port
 EXPOSE 18000
 
-ENTRYPOINT ["/docker-entrypoint.sh"]
+ENTRYPOINT ["/docker-entrypoint.sh"]