By following a link in a post from @aral I just stumbled upon https://sitejs.org/
And what a beautiful page this is! I especially mean the section "Get started in seconds" where they clearly explain what to do and exactly(!) how to do it.
When they need you to create file they use
> echo 'whatever' > file/goes/here.html
so you can simply copy&paste that and won't have to remember "what file am I editing now" or "how do I get out of vim again".
Super-lovely ☺️