feat: allow for the port to be configured (#370)

* feat: allow for the port to be configured

* feat: default to port 8080 if there is no other port provided

serve.js

@@ -1,34 +1,35 @@
 #!/usr/bin/env node
 
 const path = require('path')
-const handler = require('serve-handler');
-const http = require('http');
+const handler = require('serve-handler')
+const http = require('http')
 const opener = require('opener')
 
+const port = process.env.PORT || 8080
+
 const serverConfig = {
   public: path.join(__dirname, 'build'),
   trailingSlash: false,
-  rewrites: [
-    { source: "**", destination: "/index.html" },
-  ],
+  rewrites: [{ source: '**', destination: '/index.html' }],
   headers: [
-      {
-        source: "*",
-        headers: [{
-          key: "Cache-Control",
-          value: "max-age=3600"
-        }]
-      }
-  ]
+    {
+      source: '*',
+      headers: [
+        {
+          key: 'Cache-Control',
+          value: 'max-age=3600',
+        },
+      ],
+    },
+  ],
 }
 
 const server = http.createServer((request, response) => {
+  return handler(request, response, serverConfig)
+})
 
-  return handler(request, response, serverConfig);
-})
- 
-server.listen(8080, () => {
-  console.log('Starting up Bee Dashboard on address http://localhost:8080')
+server.listen(port, () => {
+  console.log(`Starting up Bee Dashboard on address http://localhost:${port}`)
   console.log('Hit CTRL-C to stop the server')
-  opener('http://localhost:8080')
+  opener(`http://localhost:${port}`)
 })