Add Docker Build Script

src/server.ts

@@ -50,13 +50,15 @@ app.use((req, res, next) => {
  * The server listens on the port defined by the `PORT` environment variable, or defaults to 4000.
  */
 if (isMainModule(import.meta.url) || process.env['pm_id']) {
-  const port = process.env['PORT'] || 4000;
-  app.listen(port, (error) => {
+  const port = parseInt(process.env['PORT'] || '4000');
+  const host = '0.0.0.0';
+
+  app.listen(port, host, (error) => {
     if (error) {
       throw error;
     }
 
-    console.log(`Node Express server listening on http://localhost:${port}`);
+    console.log(`Node Express server listening...`);
   });
 }