Repository	sources.list entry
Proxmox VE 8 Enterprise	`deb https://enterprise.proxmox.com/debian/pve bookworm pve-enterprise`
Proxmox VE 8 No-Subscription	`deb http://download.proxmox.com/debian/pve bookworm pve-no-subscription`
Proxmox VE 8 Test	`deb http://download.proxmox.com/debian/pve bookworm pvetest`

/etc/apt/sources.list.d/proxmox.sources.

File /etc/apt/sources.list.d/proxmox.sources

Types: deb
URIs: http://download.proxmox.com/debian/pve
Suites: trixie
Components: pve-no-subscription
Signed-By: /usr/share/keyrings/proxmox-archive-keyring.gpg