gistfile1.txt

$ cat ubuntu-metabase.json
{
  "variables": {
    "region"            : "",
    "subnet_id"         : "subnet-e6d173ad"
  },

  "builders": [{
      "source_ami_filter": {
        "filters": {
          "name": "ubuntu-base-*"
        },
        "owners": ["self"],
        "most_recent": true
      },
      "type": "amazon-ebs",
      "region"               : "us-west-2",
      "subnet_id"            : "{{user `subnet_id`}}",
      "iam_instance_profile" : "ec2-full-access-to-s3",
      "instance_type"        : "t2.micro",
      "ssh_username"         : "ubuntu",
      "ami_name"             : "ubuntu-metabase-{{timestamp}}",
      "associate_public_ip_address": true,
      "temporary_security_group_source_cidr" : "0.0.0.0/0",
      "ssh_interface"        : "public_ip"
  }],

  "provisioners": [
    {
      "type": "file",
      "source": "scripts/metabase.service",
      "destination": "/home/ubuntu/metabase.service"
    },
    {
      "type": "file",
      "source": "scripts/mb-envvars.sh",
      "destination": "/home/ubuntu/mb-envvars.sh"
    },
    {
      "type": "file",
      "source": "scripts/metabase.tmpl",
      "destination": "/home/ubuntu/metabase.tmpl"
    },
    {
      "type": "shell",
      "script": "scripts/ubuntu-metabase.sh",
      "execute_command": "chmod +x {{ .Path }};  sudo -s {{ .Vars }} {{ .Path }}"
    }
  ]
}