packer_docker.json

{
  "variables": {
    "aws_access_key"          : "{{env `AWS_ACCESS_KEY_ID`}}",
    "aws_secret_key"          : "{{env `AWS_SECRET_ACCESS_KEY`}}",
    "aws_region"              : "us-east-1",
    "app_name"                : "docker",
    "source_ami_product_code" : "{{env `CENTOS7_AMI_PRODUCT_CODE`}}"
  },
  "builders": [{
    "name"                                 : "{{user `app_name` }}",
    "ami_name"                             : "{{user `app_name` }}-{{timestamp}}",
    "ami_description"                      : "Centos AMI with Docker-CE",
    "type"                                 : "amazon-ebs",
    "access_key"                           : "{{user `aws_access_key`}}",
    "secret_key"                           : "{{user `aws_secret_key`}}",
    "region"                               : "{{user `aws_region`}}",
    "instance_type"                        : "t2.micro",
    "ssh_username"                         : "centos",
    "associate_public_ip_address"          : "false",
    "run_tags"                             : { "Name": "packer_{{user `app_name` }}" },
    "tags": {
      "Name"      : "packer_docker",
      "OS Version": "Centos",
      "Tool"      : "Packer",
      "Author"    : "Abhimanyu Narwal"
    },
    "source_ami_filter": {
      "filters"    : {
        "virtualization-type" : "hvm",
        "product-code"        : "{{user `source_ami_product_code`}}"
      },
      "most_recent": true,
      "owners"     : ["aws-marketplace"]
    }
  }],
  "provisioners": [
    {
      "type"        : "shell",
      "pause_before": "30s",
      "scripts"     : [
        "scripts/install-docker.sh"
      ]
    }]
}