serve hello world on wildcard uri

src/main.ts

@@ -1,17 +1,54 @@
 import fastify from "fastify";
 
 const server = fastify();
+const bindHost = "0.0.0.0";
 const port = 8080;
+const defaultFile = "index.html";
+const errorFile = "404.html";
+const allMethods = [
+  "DELETE",
+  "GET",
+  "HEAD",
+  "PATCH",
+  "POST",
+  "PUT",
+  "OPTIONS",
+  "SEARCH",
+  "TRACE",
+  "PROPFIND",
+  "PROPPATCH",
+  "MKCOL",
+  "COPY",
+  "MOVE",
+  "LOCK",
+  "UNLOCK",
+];
 
-server.get("/", async () => {
-  return "Hello, World!\n";
+server.route({
+  method: "GET",
+  url: "/healthz",
+  schema: {
+    response: {
+      200: {
+        type: "string",
+        pattern: "^OK\n$",
+      },
+    },
+  },
+  handler: async () => {
+    return "OK\n";
+  },
 });
 
-server.get("/healthz", async () => {
-  return "OK\n";
+server.route({
+  method: allMethods as any,
+  url: "/*",
+  handler: async (request, reply) => {
+    return "Hello World\n";
+  },
 });
 
-server.listen({ host: "0.0.0.0", port }, (err) => {
+server.listen({ host: bindHost, port }, (err) => {
   if (err) {
     console.error(err);
     process.exit(1);