// healthcheck.js const http = require('http'); const options = { host: 'localhost', port: process.env.PORT || 3000, path: '/', timeout: 5000, }; const req = http.request(options, (res) => { process.exit(res.statusCode === 200 ? 0 : 1); }); req.on('error', () => process.exit(1)); req.on('timeout', () => process.exit(1)); req.end();