advanced_template.json

{
    "description": "Demo Packer template",
    "variables": {
        "aws_access_key": "",
        "aws_secret_key": "",
        "base_ami": "ami-b520c0d8",
        "base_docker_image": "ubuntu:16.04",
        "instance_type": "t2.medium",
        "vpc_id": "vpc-12345678",
        "subnet_id": "subnet-87654321"
    },
    "builders": [
        {
            "type": "amazon-ebs",
            "access_key": "{{user `aws_access_key`}}",
            "secret_key": "{{user `aws_secret_key`}}",
            "region": "us-east-1",
            "source_ami": "{{user `base_ami`}}",
            "instance_type": "{{user `instance_type`}}",
            "vpc_id": "{{user `vpc_id`}}",
            "subnet_id": "{{user `subnet_id`}}",
            "associate_public_ip_address": true,
            "ssh_username": "ubuntu",
            "ami_name": "Packer-build DEMO {{timestamp}}",
            "ami_description": "Build at {{isotime \"Mon, 02 Jan 2006 15:04:05 MST\"}} based on {{user `base_ami`}}"
        },
        {
            "type": "docker",
            "image": "{{user `base_docker_image`}}",
            "pull": true,
            "commit": true,
            "run_command": ["-d", "-i", "--net=host", "-t", "{{.Image}}", "/bin/bash"]
        }
    ],
    "provisioners": [
        {
            "type": "shell",
            "script": "bootstrap.sh",
            "only": ["docker"]
        },
        {
            "type": "shell",
            "script": "bootstrap.sh",
            "execute_command": "{{ .Vars }} sudo -E sh '{{ .Path }}'",
            "only": ["amazon-ebs"]
        },
        {
            "type": "shell",
            "script": "cleanup.sh"
        }
    ],
    "post-processors": [
        [
            {
                "type": "docker-tag",
                "only": ["docker"],
                "repository": "demo/awsadvent",
                "tag": "{{timestamp}}"
            }
        ]
    ]
}