sample.json

{
  "variables": {
  },
  "builders": [
    {
      "name": "aws-CentOS-6.5",
      "type": "amazon-ebs",
      "access_key": "*******************",
      "secret_key": "**************************************",
      "region": "us-east-1",
      "instance_type": "c3.large",
      "ami_name": "dummy-ami",
      "ssh_username": "ec2-user",
      "source_ami": "ami-0e80db66",
      "tags": {
        "Name": "dummy-ami"
      },
      "launch_block_device_mappings": [
        {
          "device_name": "/dev/sda1",
          "delete_on_termination": true
        }
      ]
    }
  ],
  "provisioners": [
    {
      "type": "shell",
      "inline_shebang": "/bin/bash -ex",
      "inline": [
        "sync"
      ]
    }
  ]
}