Hold back grub to avoid issue during apt dist-upgrade

README.md

@@ -28,7 +28,7 @@ The script expects `authorized_keys` to be in the current directory. Copy the co
 ### Run the Script
 
 ```shell
-./build-proxmox-template
+sudo ./build-proxmox-template
 ```
 
 ## Cloning the Template

build-proxmox-template

@@ -15,6 +15,7 @@ set -e
 
 virt-builder ${OS} -o ${NAME}.qcow2 --format qcow2 \
 	--root-password disabled \
+	--run-command 'echo grub-pc hold | dpkg --set-selections' \
 	--update \
 	--run-command 'apt dist-upgrade -y' \
 	--install cloud-init,qemu-guest-agent \