create torch cache dir

Dockerfile

@@ -36,7 +36,9 @@ RUN --mount=type=cache,target=/root/.cache/pip \
     --mount=type=bind,source=requirements.txt,target=requirements.txt \
     python -m pip install -r requirements.txt
 
+
 RUN mkdir /nonexistent && chmod -cR 777 /nonexistent
+RUN mkdir /.cache  && chmod -cR 777 /.cache
 
 # Switch to the non-privileged user to run the application.
 USER appuser