dpkg command not found
dpkg command not found
Then it's not ubuntu 14.04.
Read the damn tutorial. It says: You'd need a server with ubuntu 14.04 x64 minimal. Any other linux installation might also work (debian is closesly related to ubuntu, so the steps listed here will probably work on a debian install as well) (CentOS is not that closely related so most steps will require changing)
That seems pretty damn clear to me.
"Does not work" is an error report for a bug between keyboard and chair.
All hail Artie Effem