Fix current directory

Reimplement DATA_PATH

Dockerfile

@@ -5,7 +5,7 @@ ENV LIVEBOOK_APP_SERVICE_URL "https://huggingface.co/spaces/$SPACE_AUTHOR_NAME/$
 ENV LIVEBOOK_UPDATE_INSTRUCTIONS_URL "https://livebook.dev"
 ENV LIVEBOOK_WITHIN_IFRAME "true"
 ENV LIVEBOOK_APPS_PATH "/public-apps"
-# ENV LIVEBOOK_DATA_PATH "/data"
+ENV LIVEBOOK_DATA_PATH "/data"
 ENV LIVEBOOK_HOME "/notebooks"
 ENV LIVEBOOK_PORT 7860
 
@@ -13,7 +13,7 @@ EXPOSE 7860
 
 USER root
 COPY public-apps/ /public-apps
-# RUN chmod -R 777 /data
+RUN chmod -R 777 /data
 
 # Customizations start
 # apt-get required packages
@@ -31,4 +31,6 @@ RUN mkdir -p /notebooks/data
 RUN chmod -R 777 /notebooks
 
 RUN cp /notebooks/public-apps/*.livemd /public-apps/
-RUN chmod -R 777 /public-apps
+RUN chmod -R 777 /public-apps
+
+WORKDIR "/notebooks"