Initial demo setup for Komodo + Gitea integration

Added:
- Simple Express.js app with health endpoint
- Dockerfile for containerization
- Docker Compose configuration
- Komodo resource definitions (.komodo/resources.toml)
- Comprehensive README with integration details

This repo demonstrates Build, Stack, and Sync resources.

app.js

@@ -0,0 +1,19 @@
+const express = require('express');
+const app = express();
+const PORT = process.env.PORT || 3000;
+
+app.get('/', (req, res) => {
+  res.json({
+    message: 'Hello from Komodo Demo!',
+    version: '1.0.0',
+    timestamp: new Date().toISOString()
+  });
+});
+
+app.get('/health', (req, res) => {
+  res.json({ status: 'healthy' });
+});
+
+app.listen(PORT, () => {
+  console.log(`Komodo demo app running on port ${PORT}`);
+});