{
  "ignition":{"version": "2.0.0"},
  "systemd": {
    "units": [{
      "name": "update-engine.service",
      "mask": true
    },
    {
      "name": "locksmithd.service",
      "mask": true
    },
    {
      "name": "docker.service",
      "dropins": [{
        "name": "10-disable-systemd-cgroup-driver.conf",
        "contents": "[Service]\nCPUAccounting=yes\nMemoryAccounting=yes\nEnvironment=\"DOCKER_CGROUPS=\""
      }]
    }]
  },
  "passwd": {
    "users": [{
      "name": "jenkins",
      "create": {
        "groups": ["docker", "sudo"]
      }
    }]
  }
}