Add Debian 13 Packer build configuration

debian-13/Makefile

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+.PHONY: install clean
+
+HEADLESS ?= true
+
+default: install
+
+install:
+	packer build -var 'headless=$(HEADLESS)' .
+
+clean:
+	rm -rf ./builds

debian-13/README.md

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+# Debian Trixie Builds
+
+This directory contains Packer configuration for building Debian 13 (Trixie)
+images
+
+## Usage
+
+Build the image:
+
+```
+make
+```
+
+Remove build artifacts:
+
+```
+make clean
+```
+
+Build with a visible VM console for debugging:
+
+```
+make HEADLESS=false
+```

debian-13/http/preseed.cfg

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+# Select English US
+d-i debian-installer/locale string en_US
+d-i keyboard-configuration/xkb-keymap select us
+
+# Network and mirror
+d-i mirror/country string manual
+d-i mirror/http/hostname string deb.debian.org
+d-i mirror/http/directory string /debian
+d-i mirror/http/proxy string
+d-i apt-setup/cdrom/set-first boolean false
+
+# (Initial) root account setup
+d-i passwd/make-user boolean false
+d-i passwd/root-login boolean true
+d-i passwd/root-password password debian
+d-i passwd/root-password-again password debian
+
+# Time
+d-i clock-setup/utc boolean true
+d-i time/zone string UTC
+
+# Partitioning
+d-i partman-auto/method string regular
+d-i partman-auto/choose_recipe select atomic
+d-i partman/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
+
+# Install SSH server
+tasksel tasksel/first multiselect ssh-server
+
+# Opt out of package usage survey
+popularity-contest popularity-contest/participate boolean false
+
+# Patch the new instance entirely
+d-i pkgsel/upgrade select full-upgrade
+
+# SSH configuration
+d-i preseed/late_command string \
+    in-target sed -i 's/#PermitRootLogin.*/PermitRootLogin yes/' /etc/ssh/sshd_config
+
+# Bootloader
+d-i grub-installer/only_debian boolean true
+d-i grub-installer/bootdev string default
+
+# Finish
+d-i finish-install/reboot_in_progress note

debian-13/scripts/aptupdate.sh

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+#!/usr/bin/env bash
+apt-get update
+apt-get upgrade -y

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

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+packer {
+  required_plugins {
+    qemu = {
+      version = ">= 1.1.3"
+      source  = "github.com/hashicorp/qemu"
+    }
+  }
+}
+
+variable "iso_url" {
+  default = "https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-13.0.0-amd64-netinst.iso"
+}
+
+variable "iso_hash" {
+  default = "sha256:e363cae0f1f22ed73363d0bde50b4ca582cb2816185cf6eac28e93d9bb9e1504"
+}
+
+variable "disk_size" {
+  default = 102400
+}
+
+variable "memory" {
+  default = 2048
+}
+
+variable "headless" {
+  default = true
+}
+
+source "qemu" "debian-13-64-base" {
+  iso_url           = var.iso_url
+  iso_checksum      = "${var.iso_hash}"
+  output_directory  = "builds/qemu/debian-13-64-base"
+  shutdown_command  = "/usr/bin/systemctl poweroff"
+  disk_interface    = "virtio"
+  disk_size         = var.disk_size
+  memory            = var.memory
+  headless          = var.headless
+  format            = "qcow2"
+  accelerator       = "kvm"
+  http_directory    = "http"
+  ssh_username      = "root"
+  ssh_password      = "debian"
+  ssh_timeout       = "60m"
+  vm_name           = "debian-13-64-base"
+  net_device        = "virtio-net"
+  boot_wait         = "5s"
+  boot_command      = [
+    "<down>",
+    "<tab>",
+    " auto=true",
+    " priority=critical",
+    " hostname=trixie",
+    " domain=",
+    " url=http://{{ .HTTPIP }}:{{ .HTTPPort }}/preseed.cfg",
+    "<enter>"
+  ]
+}
+
+build {
+  name = "debian-base"
+  sources = ["source.qemu.debian-13-64-base"]
+
+  provisioner "shell" {
+    scripts = [
+      "scripts/aptupdate.sh",
+    ]
+  }
+}