scripts-misc/proxmox/create-debian-template.sh

#!/bin/bash
set -x

vmId=9001
pveStorage="local-lvm"
vmName="debian-12-${timestamp}.template.net"
timestamp=$(date '+%Y-%m-%d-%H-%M')
##################

wget https://cloud.debian.org/images/cloud/bookworm/latest/debian-12-genericcloud-amd64.qcow2 -O debian-genericcloud-amd64.qcow2
qm destroy ${vmId}

qm create ${vmId} --cores 2 --memory 2048 --net0 virtio,bridge=vmbr0 --scsihw virtio-scsi-pci --name "${vmName}"

qm set ${vmId} --scsi0 ${pveStorage}:0,import-from=/root/debian-genericcloud-amd64.qcow2
qm set ${vmId} --ide2 ${pveStorage}:cloudinit
qm set ${vmId} --boot order=scsi0
qm set ${vmId} --agent enabled=1
qm set ${vmId} --ostype l26
qm set ${vmId} --serial0 socket --vga serial0
qm resize ${vmId} scsi0 +6G

qm template ${vmId}
rm debian-genericcloud-amd64.qcow2

set +x