template.json

{
  "variables": {
    "access_key": "{{env `access_key`}}",
    "secret_key": "{{env `secret_key`}}",
    "region": "{{env `region`}}",
    "instance_type": "{{env `instance_type`}}",
    "ssh_username": "{{env `ssh_username`}}"
  },
  "builders": [{
    "type": "amazon-ebs",
    "access_key": "{{user `access_key`}}",
    "secret_key": "{{user `secret_key`}}",
    "region": "{{user `region`}}",
    "source_ami": "ami-80861296",
    "instance_type": "{{user `instance_type`}}",
    "ssh_username": "ubuntu",
    "ami_name": "mogura-geth {{timestamp}}"
  }],
  "provisioners": [
    {
      "type": "shell",
      "inline": [
        "sleep 30",
        "sudo apt-get -y update",
        "sudo apt-get -y install apt-transport-https ca-certificates curl software-properties-common",
        "curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -",
        "sudo apt-key fingerprint 0EBFCD88",
        "sudo add-apt-repository \"deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable\"",
        "sudo apt-get -y update",
        "sudo apt-get -y install docker-ce",
        "sudo apt-get -y install software-properties-common",
        "sudo add-apt-repository -y ppa:ethereum/ethereum",
        "sudo apt-get -y update",
        "sudo apt-get -y install ethereum"
      ]
    }]
  }