Fix HF cache and persist dir to use /tmp

Dockerfile

@@ -19,9 +19,9 @@ RUN pip install --no-cache-dir -r /home/appuser/app/requirements.txt
 # copy project files
 COPY --chown=appuser:appuser . /home/appuser/app
 
-# ensure HF cache + persistence go to /data
-ENV HF_HOME=/data/.huggingface
-ENV PERSIST_DIR=/data/chroma_db
+# ensure HF cache + persistence go to /tmp
+ENV HF_HOME=/tmp/.huggingface
+ENV PERSIST_DIR=/tmp/chroma_db
 ENV RESUME_PATH=/home/appuser/app/media/resume/resume-ayush.pdf
 
 EXPOSE 7860