install screencloud on [debian 64bit]

based on:
https://screencloud.net/
http://software.opensuse.org/download.html?project=home%3Aolav-st&package=screencloud

check your debian version:
lsb_release -a

for debian 9:
sudo su
echo 'deb http://download.opensuse.org/repositories/home:/olav-st/Debian_9.0/ /' > /etc/apt/sources.list.d/screencloud.list
wget -nv http://download.opensuse.org/repositories/home:olav-st/Debian_9.0/Release.key -O Release.key
apt-key add - < Release.key
exit

sudo apt-get update
sudo apt-get install screencloud