Packer template

ami-template.json

{
  "builders": [{
    "type": "amazon-ebs",
    "ami_name": "${ami-name}-{{isotime \"Jan-02-06\"}}",
    "instance_type": "${instance_type}",
    "region": "${region}",
    "source_ami": "${source_ami}",
    "security_group_ids": ["${security_groups}"],
    "ssh_username": "${ssh_username}",
    "iam_instance_profile": "${instance_profile}",
    "profile": "${profile}",
    "vpc_id": "${vpc_id}",
    "subnet_id": "${subnet_id}",
    "ami_users": ["${accounts}"],
    "tags": {
      "Name": "${ami-name}-{{isotime \"Jan-02-06\"}}",
      "Base_AMI_Name": "{{ .SourceAMIName }}",
      "OS": "${os}"
    }
    }],
    "provisioners": [{
      "type": "shell",
      "script": "${script}"
      }]
}