Yes its the official build.
As for hosting your probably right.
'Hosting - Web - Deluxe - Linux - 1 year (recurring)'
I still want to know what service I need to run Bitcoin on server. I have had good luck calling them in the past for upgrades.
You need Root Access to a hosting server, usually Virtual Private Server hosting or Dedicated Hosting comes standard with this... I don't know why you can't find the bitcoin application but you will need Root Access enabled on your hosting in order to run basically anything bitcoin related.