Add cache for HF (#4574)

Author: patrick91

backend/Dockerfile

@@ -72,7 +72,10 @@ ENV LIBRARY_PATH=/lib:/usr/lib LD_LIBRARY_PATH=/lib:/usr/lib
 
 RUN apt-get update -y && apt-get install -y curl
 
-RUN groupadd -r app && useradd -r -g app app && mkdir -p ${FUNCTION_DIR} && chown -R app:app ${FUNCTION_DIR}
+RUN groupadd -r app && useradd -r -g app app && mkdir -p ${FUNCTION_DIR} && chown -R app:app ${FUNCTION_DIR} \
+    && mkdir -p /home/app/.cache/huggingface && chown -R app:app /home/app/.cache
+
+ENV HF_HOME=/home/app/.cache/huggingface
 
 COPY --chown=app:app --from=js-stage ${FUNCTION_DIR}/dist/*.html ${FUNCTION_DIR}/custom_admin/templates/astro/
 COPY --chown=app:app --from=js-stage ${FUNCTION_DIR}/dist/widgets/*.html ${FUNCTION_DIR}/custom_admin/templates/astro/widgets/