Switch port to 8181.

Won't conflict with k8s api server port.

examples/nodejs-bad-rest-api/demo.yml

@@ -5,7 +5,7 @@ express_server:
   working_dir: /usr/src/app
   command: bash -c "npm install && node server.js"
   ports:
-    - "8080:8080"
+    - "8181:8181"
   volumes:
         - ${PWD}:/usr/src/app
 

examples/nodejs-bad-rest-api/server.js

@@ -2,13 +2,13 @@ var express    = require('express');        // call express
 var app        = express();                 // define our app using express
 var child_process = require('child_process');
 
-var port = process.env.PORT || 8080;        // set our port
+var port = process.env.PORT || 8181;        // set our port
 
 // ROUTES FOR OUR API
 // =============================================================================
 var router = express.Router();              // get an instance of the express Router
 
-// test route to make sure everything is working (accessed at GET http://localhost:8080/api)
+// test route to make sure everything is working (accessed at GET http://localhost:8181/api)
 router.get('/', function(req, res) {
     res.json({ message: 'API available'});
 });