I’m not sure what you mean by blocker. If you mean “reason why this isn’t feasible”, then things like SASS, etc.
You would need to ensure write permission for the group > www-data > on the directory
Hmm, how do I do that? Things are getting a bit messy…
I got it to work (somewhat):
I created a subdirectory and made the remote user the owner: chown markstar: /var/www/test/
However, despite markstar being in www-data (see above), chown www-data: /var/www/test/ did NOT work. Strange…
So I guess question solved, despite me still not understanding why www-data doesn’t work.
Also, despite markstar being able to create files and folders in the directory, the user can’t change its name, which I also find strange.
Either way, would have been nice to easily add users to groups and manage access to directories like that.