selfhosted tutorial/playground page like on vuejs.org/tutorial or svelte.dev/tutorial

Hi, I am teacher. I want to make a tutorial site like here or svelte.dev/tutorial or vuejs.org/tutorial to teach basic html, css and javascript to my students. Is that kind of tutorial page custom made or part of lms-apps like moodle or something? is it possible for me to selfhost it? preferably on our school's local network? thanks...