Debrepository

Import key file

wget -qO - http://packages.openrobotino.org/keyFile | sudo apt-key add -

Ubuntu 16.04 Xenial (image version 3.x)

sudo su
echo "deb http://packages.openrobotino.org/xenial xenial main" > /etc/apt/sources.list.d/openrobotino.list

Ubuntu 18.04 Xenial (image version 4.x)

sudo su
echo "deb http://packages.openrobotino.org/bionic bionic main" > /etc/apt/sources.list.d/openrobotino.list