diff --git a/debian12/http/preceed.cfg b/debian12/http/preceed.cfg
new file mode 100644
index 0000000..122413e
--- /dev/null
+++ b/debian12/http/preceed.cfg
@@ -0,0 +1,66 @@
+#_preseed_V1
+
+# localization
+d-i debian-installer/language string en
+d-i debian-installer/country string NL
+d-i debian-installer/locale string en_US.UTF-8
+d-i keyboard-configuration/xkb-keymap select us
+
+# mirror
+d-i mirror/protocol string http
+d-i mirror/country string manual
+d-i mirror/http/hostname string ftp.nl.debian.org
+d-i mirror/http/directory string /debian
+d-i mirror/http/proxy string
+d-i mirror/suite string bookworm
+
+# account
+d-i passwd/root-login boolean false
+d-i passwd/make-user boolean true
+d-i passwd/username string packer
+d-i passwd/user-password password packer
+d-i passwd/user-password-again password packer
+
+# timezone
+d-i clock-setup/utc boolean true
+d-i time/zone string Europe/Amsterdam
+d-i clock-setup/ntp boolean true
+d-i clock-setup/ntp-server string nl.pool.ntp.org
+
+# disk partitioning
+d-i partman-auto/disk string /dev/vda
+d-i partman-auto/method string regular
+d-i partman-auto/choose_recipe select atomic
+d-i partman-partitioning/confirm_write_new_label boolean true
+d-i partman/choose_partition select finish
+d-i partman/confirm boolean true
+d-i partman/confirm_nooverwrite boolean true
+d-i partman/mount_style select uuid
+
+# base system install
+d-i base-installer/kernel/image string linux-image-amd64
+
+# apt
+d-i apt-setup/non-free-firmware boolean true
+d-i apt-setup/non-free boolean true
+d-i apt-setup/contrib boolean true
+d-i apt-setup/disable-cdrom-entries boolean true
+d-i apt-setup/services-select multiselect security, updates
+d-i apt-setup/security_host string security.debian.org
+d-i debian-installer/allow_unauthenticated boolean false
+
+# package selection
+tasksel tasksel/first multiselect standard, ssh-server
+d-i pkgsel/upgrade select full-upgrade
+popularity-contest popularity-contest/participate boolean false
+
+# boot loader
+d-i grub-installer/only_debian boolean true
+d-i grub-installer/bootdev string /dev/vda
+
+# finalize install
+d-i finish-install/reboot_in_progress note
+d-i cdrom-detect/eject boolean true
+
+# remove installation-report
+d-i preseed/late_command string in-target apt-get -y purge installation-report
diff --git a/debian12/packer.pkr.hcl b/debian12/packer.pkr.hcl
new file mode 100644
index 0000000..daefb07
--- /dev/null
+++ b/debian12/packer.pkr.hcl
@@ -0,0 +1,134 @@
+# packer
+packer {
+  required_plugins {
+    proxmox = {
+      version = ">=1.1.8"
+      source  = "github.com/hashicorp/proxmox"
+    }
+  }
+}
+
+
+# variables
+variable "proxmox_iso_pool" {
+  type    = string
+  default = ""
+}
+
+variable "proxmox_node" {
+  type    = string
+  default = ""
+}
+
+variable "proxmox_password" {
+  type    = string
+  default = ""
+}
+
+variable "proxmox_storage_format" {
+  type    = string
+  default = "raw"
+}
+
+variable "proxmox_storage_pool" {
+  type    = string
+  default = ""
+}
+
+variable "proxmox_storage_pool_type" {
+  type    = string
+  default = "rbd"
+}
+
+variable "proxmox_url" {
+  type    = string
+  default = ""
+}
+
+variable "proxmox_username" {
+  type    = string
+  default = ""
+}
+
+variable "template_description" {
+  type    = string
+  default = "Debian 12 Bookworm Template"
+}
+
+variable "template_name" {
+  type    = string
+  default = "debian.template.siempie.internal"
+}
+
+variable "template_username" {
+  type    = string
+  default = ""
+}
+
+variable "template_password" {
+  type    = string
+  default = ""
+}
+
+variable "iso_image" {
+  type    = string
+  default = "debian-12.5.0-amd64-netinst.iso"
+}
+
+variable "version" {
+  type    = string
+  default = ""
+}
+
+
+# builder
+source "proxmox-iso" "template" {
+
+  # boot
+  boot_command   = ["<esc><wait>auto url=http://{{ .HTTPIP }}:{{ .HTTPPort }}/preseed.cfg<enter>"]
+  boot_wait    = "10s"
+
+  # specs
+  cores  = "2"
+  memory = "4096"
+
+  # storage
+  disks {
+    disk_size         = "20G"
+    format            = "${var.proxmox_storage_format}"
+    storage_pool      = "${var.proxmox_storage_pool}"
+    type              = "virtio"
+  }
+
+  # networking
+  network_adapters {
+    bridge = "vmbr0"
+  }
+
+  # misc
+  http_directory           = "debian12/http"
+  insecure_skip_tls_verify = true
+  iso_file                 = "${var.proxmox_iso_pool}/${var.iso_image}"
+  node                     = "${var.proxmox_node}"
+  vm_id                    = "998"
+  tags                     = "mgmt"
+  os                       = "l26"
+  password                 = "${var.proxmox_password}"
+  proxmox_url              = "${var.proxmox_url}"
+  scsi_controller          = "virtio-scsi-single"
+  ssh_port                 = 22
+  ssh_timeout              = "20m"
+  ssh_username             = "${var.template_username}"
+  ssh_password             = "${var.template_password}"
+  template_description     = "${var.template_description}"
+  template_name            = "${var.template_name}"
+  unmount_iso              = true
+  username                 = "${var.proxmox_username}"
+}
+
+build {
+  sources = ["source.proxmox-iso.template"]
+  provisioner "shell" {
+    script = "scripts/debian12.sh"
+  }
+}
diff --git a/scripts/debian12.sh b/scripts/debian12.sh
new file mode 100644
index 0000000..d90ce2b
--- /dev/null
+++ b/scripts/debian12.sh
@@ -0,0 +1 @@
+echo "> hello ..."