[SOLVED] Armory (Bitcoin Wallet) on Whonix 8/Debian Stable

I would like to install Armory Bitcoin Wallet in Whonix 8.

For Whonix 7 it was very easy, I downloaded the file from the armory website, double click and install it.

For Whonix 8 this workaround is not possible (I think because it is Debian stable and not testing).

Please can anyone explain how it works?
Or is there any website that explains an easy workaround (I am very new in Linux)?

Thanks a lot!

Follow the instructions of Gregory.