NGINX - Wordpress/Roots in sub folder of domain

1

I have my dev sites working on a domain, but I’d like to have a few in subdirectories i.e

domain.com/site1/
domain.com/site2/

Does anybody know how to add to the site file in sites-available for NGINX to achieve this? I’m currently using the below, but it obviously only works for a WP install in the domain root.

## Roots rewrites
location ~ ^/assets/(img|js|css|fonts)/(.*)$ {
  try_files $uri $uri/ /wp-content/themes/roots/assets/$1/$2;
}
location ~ ^/plugins/(.*)$ {
  try_files $uri $uri/ /wp-content/plugins/$1;
}
## eof Roots