Build and deploy blockly-games fork

I’m trying to fork project blockly-games from google at github.

I’m working with children and looking for ways to make them discover block languages progressively, like at, because is difficult on first approche.

I copied content of project in public folder of , set gitlab-ci.yml to build app and then serve artifacts but after jobs , I have a blank screen at .

Everythings works on my local copy…

Thank you for your help.