I'm looking for a way to set a parameter in my browser or some sort of token that allows nginx to select the site that is going to serve.
I wish to put the configuration in the nginx sites-enabled folder. Something like
/etc/nginx/sites-enabled/example.com-construction <- The site regular people would get /etc/nginx/sites-enabled/example.com <- The site I'll get
The second site only applies for connections comming from specific users (no more than 10) marked by a param in their browser.