Make root password configurable

debian-13/x86_64-qemu-base.pkr.hcl

@@ -23,6 +23,10 @@ variable "memory" {
   default = 2048
 }
 
+variable "ssh_password" {
+  default = "debian"
+}
+
 variable "headless" {
   default = true
 }
@@ -40,7 +44,7 @@ source "qemu" "debian-13-64-base" {
   accelerator       = "kvm"
   http_directory    = "http"
   ssh_username      = "root"
-  ssh_password      = "debian"
+  ssh_password      = var.ssh_password
   ssh_timeout       = "60m"
   vm_name           = "debian-13-64-base"
   net_device        = "virtio-net"
@@ -50,6 +54,8 @@ source "qemu" "debian-13-64-base" {
     "<tab>",
     " auto=true",
     " priority=critical",
+    " passwd/root-password=${var.ssh_password}",
+    " passwd/root-password-again=${var.ssh_password}",
     " hostname=trixie",
     " domain=",
     " url=http://{{ .HTTPIP }}:{{ .HTTPPort }}/preseed.cfg",