Burn iso on flash drive or DVD.
Install Ubuntu from your flash drive.
Ubuntu Installation steps aren't important. On the last step in some cases you may be asked to create user - type anything you want - the default user is already built in iso.
After Ubuntu installed, you just need to login with default login:password - vagrant:vagrant.
To start installation run:
You will see installation process in terminal. You will bee asked to switch default containers directory.
Now just wait until you see a proposal to enter the login/password from ClusterGX.
After that just wait until install is finished.