https://pimylifeup.com/raspberry-pi-proxmox/

https://forum.proxmox.com/threads/guide-install-home-assistant-os-in-a-vm.143251/

https://forum.proxmox.com/threads/how-to-convert-raspberry-pi-os-images-and-import-to-proxmox.146837/

Dont Forget 2 setup lan-connection as bridge

https://www.informaticar.net/how-to-configure-virtualization-with-virt-manager-on-raspberry-pi-and-network-bridge/

Limit Download-Speed

https://askubuntu.com/questions/50402/how-to-limit-the-download-speed-of-apt