Create app.js

app.js

@@ -0,0 +1,14 @@
+const http = require('http');
+
+const hostname = process.env.HOST || '0.0.0.0';
+const port = process.env.PORT || 7860;
+
+const server = http.createServer((req, res) => {
+  res.statusCode = 200;
+  res.setHeader('Content-Type', 'text/plain');
+  res.end('Hello World');
+});
+
+server.listen(port, hostname, () => {
+  console.log(`Server running at http://${hostname}:${port}/`);
+});