Install Proxmox Backup Server in an LXC Container
Setup a Debian 12 LXC with a minimum of 2 cores and 2GB of RAM.
Once it has booted, proceed with the following instructions...
Update the system
apt update
apt dist-upgrade -y
Add the repository key
wget https://enterprise.proxmox.com/debian/proxmox-release-bookworm.gpg -O /etc/apt/trusted.gpg.d/proxmox-release-bookworm.gpg
Add the repo to the sources
echo "deb http://download.proxmox.com/debian/pbs bookworm pbs-no-subscription" >> /etc/apt/sources.list
Update the package cache and install Proxmox Backup Server
apt update
apt install proxmox-backup-server -y
You should then be able to access the web UI on port 8007