chore(init): project setup with Docker support

backend/index.js

@@ -0,0 +1,19 @@
+const WebSocket = require('ws');
+
+const wss = new WebSocket.Server({ port: 8080 });
+
+wss.on('connection', (ws) => {
+  console.log('Client connected');
+
+  ws.on('message', (message) => {
+    console.log(`Received message => ${message}`);
+  });
+
+  ws.on('close', () => {
+    console.log('Client disconnected');
+  });
+
+  ws.send('Hello! Message from server.');
+});
+
+console.log('WebSocket server is running on ws://localhost:8080');