packer.json

{
  "variables": {
    "aws_access_key_id": "{{ env `AWS_ACCESS_KEY_ID` }}",
    "aws_secret_access_key": "{{ env `AWS_SECRET_ACCESS_KEY` }}",
    "aws_region": "{{ env `AWS_REGION` }}",
    "website_environment": "production",
    "fastly_api_key": "{{ env `FASTLY_API_KEY` }}"
  },
  "builders": [
    {
      "type": "docker",
      "image": "hashicorp/middleman-hashicorp:0.3.28",
      "discard": "true",
      "volumes": {
        "{{ pwd }}/ext": "/ext",
        "{{ pwd }}/content": "/website"
      }
    }
  ],
  "provisioners": [
    {
      "type": "shell",
      "environment_vars": [
        "AWS_ACCESS_KEY_ID={{ user `aws_access_key_id` }}",
        "AWS_SECRET_ACCESS_KEY={{ user `aws_secret_access_key` }}",
        "AWS_REGION={{ user `aws_region` }}",
        "DEPLOY_ENV={{ user `website_environment` }}",
        "FASTLY_API_KEY={{ user `fastly_api_key` }}"
      ],
      "inline": [
        "bundle check || bundle install",
        "bundle exec middleman build",
        "/bin/bash ./scripts/deploy.sh"
      ]
    }
  ]
}