How to Host a Fastify API on Vertra Cloud

my-api-fastify/
├── src/
│   ├── server.js
│   └── routes/
│       └── index.js
├── package.json
└── vertracloud.config

{
  "name": "my-api-fastify",
  "version": "1.0.0",
  "main": "src/server.js",
  "scripts": {
    "start": "node src/server.js"
  },
  "dependencies": {
    "fastify": "^5.0.0",
    "@fastify/cors": "^10.0.0"
  }
}

MAIN=src/server.js
START=npm start
VERSION=recommended

const fastify = require('fastify')({ logger: true });
const cors = require('@fastify/cors');

fastify.register(cors, { origin: '*' });

fastify.get('/', async (request, reply) => {
  return { message: 'Fastify on Vertra Cloud!' };
});

fastify.get('/health', async (request, reply) => {
  return { status: 'healthy', uptime: process.uptime() };
});

const start = async () => {
  try {
    const port = process.env.PORT || 80;
    await fastify.listen({ port, host: '0.0.0.0' });
  } catch (err) {
    fastify.log.error(err);
    process.exit(1);
  }
};

start();