Multiple instances of ERPNext in one server

$ curl -I localhost

HTTP/1.1 200 OK
Server: nginx/1.4.6 (Ubuntu)
Date: Sun, 01 Feb 2015 12:17:13 GMT
Content-Type: text/html
Content-Length: 840
Last-Modified: Thu, 29 Jan 2015 18:10:15 GMT
Connection: keep-alive
ETag: “54ca7787-348”
Accept-Ranges: bytes

i have hosted some websites by creating virtual hosts and those are loading perfectly. i am on a digitalocean vps