packer.json

{
  "variables": {},
  "builders": [
    {
      "type": "arm-image",
      "iso_url": "https://downloads.raspberrypi.org/raspios_arm64/images/raspios_arm64-2022-01-28/2022-01-28-raspios-bullseye-arm64.zip",
      "iso_checksum": "sha256:c6f583fab8ed8d84bdf272d095c821fa70d2a0b434ba78432648f69b661d3783",
      "last_partition_extra_size": 1048576000
    }
  ],
  "provisioners": [
    {
      "type": "shell",
      "script": "provision-os.sh",
      "expect_disconnect": true,
      "execute_command": "echo 'packer' | sudo -S sh -c '{{ .Vars }} {{ .Path }}'"
    },
    {
      "type": "shell",
      "script": "provision-os-step2.sh",
      "pause_before": 30,
      "execute_command": "echo 'packer' | sudo -S sh -c '{{ .Vars }} {{ .Path }}'"
    }
  ],
  "post-processors": [
    [
      {
        "type": "compress",
        "keep_input_artifact": false,
        "output": "pibox-img.zip"
      }
    ]
  ]
}