only run domains and nginx config if we have a port and ip. fixes #1355

tests/apps/nodejs-worker/DOKKU_SCALE

@@ -0,0 +1,2 @@
+web=0
+worker=1

tests/apps/nodejs-worker/Procfile

@@ -0,0 +1 @@
+worker: node worker.js

tests/apps/nodejs-worker/check_deploy

@@ -0,0 +1,2 @@
+#!/usr/bin/env bash
+set -e; output="$(pgrep -f "node worker.js" | wc -l)"; echo "$output"; test "$output" == "1"

tests/apps/nodejs-worker/package.json

@@ -0,0 +1,8 @@
+{
+  "name": "node-example",
+  "version": "0.0.1",
+  "engines": {
+    "node": "0.10.x",
+    "npm": "2.7.x"
+  }
+}

tests/apps/nodejs-worker/worker.js

@@ -0,0 +1,6 @@
+function worker() {
+  console.log('sleeping for 60 seconds');
+  setTimeout(worker, 60 * 1000);
+}
+
+worker();