Give permissions to vectorstore folder

Dockerfile

@@ -4,6 +4,7 @@ USER user
 ENV HOME=/home/user \
     PATH=/home/user/.local/bin:$PATH
 WORKDIR $HOME/app
+RUN mkdir -p $HOME/app/data/vectorstore && chown -R user:user $HOME/app/data
 COPY --chown=user . $HOME/app
 COPY ./requirements.txt ~/app/requirements.txt
 RUN pip install -r requirements.txt