new examples

node/simple-webserver/.dockerignore

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+node_modules/

node/simple-webserver/.gitignore

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+node_modules/

node/simple-webserver/README.md

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+# Simple Webserver
+
+A simple HTTP server using pure Node.js (no dependencies).
+
+## Getting Started
+
+```bash
+npm start
+```
+
+## Endpoints
+
+- `GET /` - Returns `{"message": "Hello from Node.js!"}`
+- `GET /health` - Returns `{"status": "ok"}`

node/simple-webserver/index.js

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+const http = require('http');
+
+const PORT = process.env.PORT || 3000;
+
+// Runtime env vars (read at server startup)
+const RUNTIME_PRIVATE_VAR = process.env.RUNTIME_PRIVATE_VAR || 'default-value';
+const RUNTIME_PUBLIC_VAR = process.env.RUNTIME_PUBLIC_VAR || 'default-value';
+
+console.log('=== Runtime Variables ===');
+console.log('RUNTIME_PRIVATE_VAR:', RUNTIME_PRIVATE_VAR);
+console.log('RUNTIME_PUBLIC_VAR:', RUNTIME_PUBLIC_VAR);
+
+const server = http.createServer((req, res) => {
+  if (req.url === '/' && req.method === 'GET') {
+    res.writeHead(200, { 'Content-Type': 'application/json' });
+    res.end(JSON.stringify({
+      message: 'Hello from Node.js!',
+      runtimePrivateVar: RUNTIME_PRIVATE_VAR,
+      runtimePublicVar: RUNTIME_PUBLIC_VAR,
+    }));
+  } else if (req.url === '/health' && req.method === 'GET') {
+    res.writeHead(200, { 'Content-Type': 'application/json' });
+    res.end(JSON.stringify({ status: 'ok' }));
+  } else {
+    res.writeHead(404, { 'Content-Type': 'application/json' });
+    res.end(JSON.stringify({ error: 'Not found' }));
+  }
+});
+
+server.listen(PORT, () => {
+  console.log(`Server running on port ${PORT}`);
+});

node/simple-webserver/package.json

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+{
+  "name": "simple-webserver",
+  "version": "1.0.0",
+  "description": "A simple backend webserver written in nodejs",
+  "main": "index.js",
+  "scripts": {
+    "start": "node index.js"
+  },
+  "keywords": [],
+  "license": "MIT"
+}