job "check-firewall" {
  datacenters = ["dc1"]
  type        = "batch"

  group "check" {
    count = 1
    constraint {
      attribute = "${attr.unique.hostname}"
      value     = "odroid7"
    }

    task "check" {
      driver = "docker"
      config {
        image        = "busybox"
        network_mode = "host"
        command      = "sh"
        args         = ["-c", "nc -zv 127.0.0.1 20202 && echo 'Listening'"]
      }
    }
  }
}