I - Mise en place Basique

Installation de unattended-upgrades

sudo apt update
sudo apt install unattended-upgrades apt-listchanges -y

Ensuite on passe a l'activation de unattended-upgrades

sudo dpkg-reconfigure -plow unattended-upgrades

test et validation de la mise en place

sudo unattended-upgrade -d --dry-run

on vérifie maintenant les logs

cat /var/log/unattended-upgrades/unattended-upgrades.log