packer.json

{
  "variables": {
    "aws_access_key": "{{env `AWS_ACCESS_KEY_ID`}}",
    "aws_secret_key": "{{env `AWS_SECRET_ACCESS_KEY`}}",
    "region":  "{{env `AWS_DEFAULT_REGION`}}"
  },
  "builders": [
    {
      "access_key": "{{user `aws_access_key`}}",
      "ami_name": "devops-demo-{{timestamp}}",
      "instance_type": "t2.micro",
      "subnet_id": "subnet-008dd23042ead697e",
      "ssh_interface": "public_ip",
      "associate_public_ip_address": "true",
      "region": "{{user `region`}}",
      "secret_key": "{{user `aws_secret_key`}}",
      "source_ami_filter": {
        "filters": {
          "virtualization-type": "hvm",
          "name": "ubuntu/images/*ubuntu-xenial-16.04-amd64-server-*",
          "root-device-type": "ebs"
        },
        "owners": ["099720109477"],
        "most_recent": true
      },
      "ssh_username": "ubuntu",
      "type": "amazon-ebs"
    }
  ],
  "provisioners": [
    {
      "type": "file",
      "source": "files/welcome.txt",
      "destination": "/home/ubuntu/"
    },
    {
      "type": "shell",
      "inline": ["ls -al /home/ubuntu", "cat /home/ubuntu/welcome.txt"]
    },
    {
      "type": "shell",
      "scripts": [
         "scripts/example.sh",
         "scripts/install_lamp.sh"
       ]
      
    }
  ]
}