I understand… It’s not so obvious to get started with private/virtual hosting though.
I’m turning towards the docker container, through Jelastic.
So far I’m able to build the Strapi admin and start it. I’m now looking for a way to get access to the admin through Http.
But that’s another issue…
Thanks 
Edit:
By the way, it would be nice to update the recommended requirements of the documentation, for newbies like me…
Indeed, my initial hosting did meet these requirements, with Node, NPM, build-essentials…
But not the ability to configure a proxy I suppose.
Therefore, I invested quite some time with Strapi on localhost, guessing it would be compatible with my hosting service…