ubuntu1404.json

{
  "_comment": "Build with `packer build -var-file=ubuntu1404.json ubuntu-legacy.json`",
  "vm_name": "ubuntu1404",
  "cpus": "1",
  "disk_size": "65536",
  "iso_checksum": "sha1:b17d7c1e9d0321ad5810ba77b69aef43f0f29a5422b08120e6ee0576c4527c0e",
  "iso_name": "ubuntu-14.04.6-server-amd64.iso",
  "iso_url": "http://releases.ubuntu.com/14.04/ubuntu-14.04.6-server-amd64.iso",
  "memory": "512",
  "preseed" : "preseed.cfg",
  "boot_command_prefix": "<esc><esc><enter><wait>"
}