Added build for Fastify

Fastify/Dockerfile

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+FROM node:17-alpine
+
+RUN npm install fastify
+
+COPY . .
+
+CMD ["node", "server.js"]

Fastify/server.js

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+// Require the framework and instantiate it
+const fastify = require('fastify')({ logger: true })
+
+// Declare a route
+fastify.get('/', async (request, reply) => {
+  return { hello: 'world' }
+})
+
+// Run the server!
+const start = async () => {
+  try {
+    await fastify.listen(3001)
+  } catch (err) {
+    fastify.log.error(err)
+    process.exit(1)
+  }
+}
+start()