Changing Laravel applications web root

I'm having issues changing the web root path for the laravel5 application, was wondering if there was an easy way to fix it.

Basically, the new application is hosted at www2.oursite.com/, and I'm sending the traffic to it via a reverse proxy from www.oursite.com/pm2/. When the application gets deployed, all of the asset paths are broken, because its pulling from /build/, when I need it to be pulling from /pm2/build/.

Is there a quick fix for this in Laravel?

Thanks!

Edit

Just an FYI, a simple mod-rewrite wont work, since this uses proxy-pass, anything outside of the /pm2 folder goes right to a different server, thus, it wont even hit apache on the reverse proxy destination folder

via Chebli Mohamed