Apt-Cacher-NG is a caching proxy. Specialized for package files from Linux distributors, primarily for Debian (and Debian based) distributions.
To create a new Proxmox VE Apt-Cacher-NG LXC, run the command below in the Proxmox VE Shell.
bash -c "$(wget -qLO - https://github.com/tteck/Proxmox/raw/main/ct/apt-cacher-ng.sh)"
Default Settings: 512MiB RAM - 2GB Storage - 1vCPU
Apt-Cacher-NG Interface: IP:3142/acng-report.html