server {
  listen 80;
  server_name sonar.silvrtree.co.uk;

  #Configures the publicly served root directory
  #Configures the index file to be served
  root /;
      index index.html index.htm;
#  include snippets/cache.conf;

  #These lines create a bypass for certain pathnames
  #www.example.com/test.js is now routed to port 3000 
  #instead of port 80
  location / {
      proxy_pass http://localhost:9900;
      proxy_set_header Host $host;
  }

}