How to use repository

On current debian or ubuntu

• wget -O - http://v.s.cz/info@vitexsoftware.cz.gpg.key | sudo apt-key add -
• echo deb http://v.s.cz/ stable main | sudo tee /etc/apt/sources.list.d/vitexsoftware.list
• sudo apt update
• sudo apt install package(s)

apt-get update feeded 0 times