Update Dockerfile

Dockerfile

@@ -27,10 +27,7 @@ ENV PORT=7860
 EXPOSE 7860
 
 # Ensure the worker user has the necessary permissions
-RUN mkdir -p local_data/private_gpt/chromadb && chown -R worker.local_data/private_gpt
-
-# Add the worker user to the staff group
-RUN adduser worker staff
+RUN mkdir -p local_data/private_gpt/chromadb && chown -R worker:worker local_data/private_gpt
 
 # Copy only the necessary files for the app
 COPY --chown=worker --from=dependencies /home/worker/app/.venv/ .venv