To access this Debian respository and install it on Ubuntu 22.04 (jammy),
            you can add the following line to your 
/etc/apt/sources.list configuration
            file:
            
deb https://apt.vacs.fr/ubuntu-jammy jammy main
            And you can run the following command to accept the signed packages:
            
wget -O - https://apt.vacs.fr/apt.vacs.fr.gpg.key | sudo tee /etc/apt/trusted.gpg.d/apt-vacs-fr.asc
        
            To access this Debian respository and install it on Ubuntu 20.04 LTS (focal),
            you can add the following line to your 
/etc/apt/sources.list configuration
            file:
            
deb https://apt.vacs.fr/ubuntu-focal focal main
            And you can run the following command to accept the signed packages:
            
wget -O - https://apt.vacs.fr/apt.vacs.fr.gpg.key | sudo tee /etc/apt/trusted.gpg.d/apt-vacs-fr.asc
        
            To access this Debian respository and install it on Debian 11 (bullseye),
            you can add the following line to your 
/etc/apt/sources.list configuration
            file:
            
deb https://apt.vacs.fr/debian-bullseye bullseye main
            And you can run the following command to accept the signed packages:
            
wget -O - https://apt.vacs.fr/apt.vacs.fr.gpg.key | sudo tee /etc/apt/trusted.gpg.d/apt-vacs-fr.asc