template-amazon.json

{
    "variables": {
        "aws_access_key": "",
        "aws_secret_key": ""
    },

    "builders": [
        {
            "type": "amazon-ebs",
            "access_key": "{{user `aws_access_key`}}",
            "secret_key": "{{user `aws_secret_key` }}",
            "region": "us-east-1",
            "source_ami": "ami-53b1ff3a",
            "instance_type": "m1.small",
            "ssh_username": "ubuntu",
            "ami_name": "packer-docker {{timestamp}}"
        }
    ],

    "provisioners": [
        {
            "type": "shell",
            "script": "scripts/kernel.sh",
            "execute_command": "chmod +x {{ .Path }}; {{ .Vars }} sudo -E '{{ .Path }}'"
        },
        {
            "type": "shell",
            "scripts": [
                "scripts/docker.sh"
            ],
            "execute_command": "chmod +x {{ .Path }}; {{ .Vars }} sudo -E '{{ .Path }}'"
        }
    ],

    "post-processors": [
        {
            "type": "vagrant",
            "keep_input_artifact": true
        }
    ]
}