feat: implement Docker containerization, Gitea release pipeline, and express server entry point

backend/src/index.ts

@@ -5,6 +5,12 @@ import authRoutes from './routes/auth.js'
 import examRoutes from './routes/exams.js'
 import resultRoutes from './routes/results.js'
 import adminRoutes from './routes/admin.js'
+import path from 'path'
+import fs from 'fs'
+import { fileURLToPath } from 'url'
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(__filename)
 
 const PORT = Number(process.env['PORT'] ?? '3001')
 
@@ -28,6 +34,22 @@ app.get('/api/health', (_req, res) => {
   res.json({ status: 'ok', timestamp: Date.now() })
 })
 
+// Serve static frontend files if they exist
+const frontendDistPath = path.join(__dirname, '../../frontend/dist')
+if (fs.existsSync(frontendDistPath)) {
+  console.log(`Serving frontend from: ${frontendDistPath}`)
+  app.use(express.static(frontendDistPath))
+  app.get('*', (req, res) => {
+    if (!req.path.startsWith('/api')) {
+      res.sendFile(path.join(frontendDistPath, 'index.html'))
+    } else {
+      res.status(404).json({ error: 'API route not found' })
+    }
+  })
+} else {
+  console.log('Frontend build not found, skipping static serving.')
+}
+
 const server = app.listen(PORT, () => {
   console.log(`🧠 BrainWave API running on http://localhost:${PORT}`)
 })