You will need Node js, which you should install through asdf.
Then install NPM dependencies by running:
npm installYou should now be able to use Gulp. Have a look at gulpfile.js to see what's available (mainly compile, serve, deploy).
node_modules/gulp/bin/gulp.js --gulpfile gulpfile.jsSince this is hosted on Github Pages with an Org repository, the branch containing the compiled assets needs to be master, so the protected source branch is src.
To compile and deploy, checkout src and run:
gulp deploy