Add complete dockerized amigos app with React frontend and MongoDB backend

backend/server.js

@@ -0,0 +1,66 @@
+const express = require('express');
+const { MongoClient } = require('mongodb');
+const cors = require('cors');
+
+const app = express();
+const PORT = 3001;
+
+// Middleware
+app.use(cors());
+app.use(express.json());
+
+// MongoDB connection
+const uri = 'mongodb://admin:MongoPass2024!@localhost:27017/?authSource=admin';
+const client = new MongoClient(uri);
+
+let db;
+let amigosCollection;
+
+// Connect to MongoDB
+async function connectDB() {
+  try {
+    await client.connect();
+    console.log('Connected to MongoDB');
+    db = client.db('testdb');
+    amigosCollection = db.collection('amigos');
+  } catch (error) {
+    console.error('Error connecting to MongoDB:', error);
+  }
+}
+
+// Routes
+// Get all amigos
+app.get('/api/amigos', async (req, res) => {
+  try {
+    const amigos = await amigosCollection.find({}).toArray();
+    res.json(amigos);
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+// Add new amigo
+app.post('/api/amigos', async (req, res) => {
+  try {
+    const { nombre } = req.body;
+    if (!nombre) {
+      return res.status(400).json({ error: 'Nombre es requerido' });
+    }
+    
+    const result = await amigosCollection.insertOne({ nombre });
+    res.status(201).json({ 
+      message: 'Amigo agregado exitosamente',
+      id: result.insertedId,
+      nombre 
+    });
+  } catch (error) {
+    res.status(500).json({ error: error.message });
+  }
+});
+
+// Start server
+connectDB().then(() => {
+  app.listen(PORT, () => {
+    console.log(`Server running on http://localhost:${PORT}`);
+  });
+});