I've got two sites, example.com and beta.example.com. The configuration for these two sites is almost identical, except for the root directory (/var/www/sitename/live/public/ for the first domain, and /var/www/sitename/beta/public/ for the second domain) and a few environment variables (database name, etc.) used by the code. What's the best way to share as much of the Nginx configuration as possible between the two sites? Should I pull the common settings into an include file and include it in both of the server blocks, or is there a better way?

Thanks!

- Daniel