Serves demo pages of important elements.
jsdoc is a simple program that serves up demo pages for select folders and serves them over HTTP.
make release builds a Docker container and uploads it to GKE. One can run one of those containers locally as follows:
docker run -p 8000:8000 gcr.io/skia-public/jsdoc:2018-06-19T17_38_25Z-username-b442da2-dirty
which will map port 8000 in the container (the HTTP server) to port 8000 on the host, reachable at [localhost:8000].