Add public-apps

Import changes from upstream to include public-apps. We also copy apps from the git repo to hopefully boot these notebooks at runtime.

Dockerfile

@@ -9,14 +9,17 @@ ENV LIVEBOOK_APP_SERVICE_NAME "🐳 Hugging Face - $SPACE_TITLE"
 ENV LIVEBOOK_APP_SERVICE_URL "https://huggingface.co/spaces/$SPACE_AUTHOR_NAME/$SPACE_REPO_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_PORT 7860
 
 EXPOSE 7860
 
 USER root
+COPY public-apps/ /public-apps
 RUN mkdir -p /data/notebooks
 RUN chmod 777 /data
 RUN chmod 777 /data/notebooks
 
-RUN git clone https://github.com/w0rd-driven/livebook_notebooks /data/notebooks
+RUN git clone https://github.com/w0rd-driven/livebook_notebooks /data/notebooks
+RUN cp /data/notebooks/public-apps/*.livemd /public-apps/