Proxmox VE No-Subscription Repository
This is the recommended repository for testing and non-production use. Its packages are not as heavily tested and validated. You don’t need a subscription key to access the pve-no-subscription repository.
We recommend to configure this repository in /etc/apt/sources.list.
File /etc/apt/sources.list
deb
http://ftp.debian.org/debian bullseye main contrib
deb
http://ftp.debian.org/debian bullseye-updates main contrib
# PVE pve-no-subscription repository provided by proxmox.com,
# NOT recommended for production use
deb
http://download.proxmox.com/debian/pve bullseye pve-no-subscription
# security updates
deb
http://security.debian.org/debian-security bullseye-security main contrib