{
  "first_run": {
    "credentials": [
      {
        "label": "Jenkins unlock",
        "type": "runtime-generated",
        "username": "admin",
        "password": null,
        "change_required": true,
        "source": "jenkins-initial-admin-password",
        "retrieval": {
          "method": "container-file",
          "path": "/var/jenkins_home/secrets/initialAdminPassword",
          "timeout_seconds": 300
        }
      }
    ]
  }
}