Added config options to define what host address and port to listen on

build/etc/production.json

@@ -1,4 +1,8 @@
 {
+  "server": {
+    "address": "0.0.0.0",
+    "port": 3000
+  },
   "database": {
     "driver": "sqlite",
     "connection_string": "/opt/overseer/data/overseer.db"

config/default.json

@@ -1,4 +1,8 @@
 {
+  "server": {
+    "address": "0.0.0.0",
+    "port": 3000
+  },
   "database": {
     "driver": "sqlite",
     "connection_string": "data/overseer.db"

index.js

@@ -4,7 +4,7 @@ const session = require('express-session');
 
 // instantiate new express.js app
 const app = express();
-const port = 3000;
+const config = require('config');
 
 // initialize database connection
 (async () => {
@@ -50,6 +50,6 @@ app.get('/item/:id/edit', itemRoutes.getItemEdit);
 app.post('/item/:id/edit', itemRoutes.postItemEdit);
 
 // start app
-app.listen(port, () => {
+app.listen(config.get('server.port'), config.get('server.address'), () => {
-  console.log(`Example app listening on port ${port}`);
+  console.log(`Overseer is listening on port ${config.get('server.port')}.`);
 });