diff --git a/package.json b/package.json
index a3141bb..e805c7d 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,7 @@
   "scripts": {
     "start": "astro dev",
     "build": "astro build",
+    "build:preview": "astro build && node ./src/server.mjs",
     "publish:patch": "npm version patch && npm publish --access public",
     "publish:minor": "npm version minor && npm publish --access public",
     "deploy": "astro build && scp -r dist ayo@ayco.io:~/cozy/"
diff --git a/server.mjs b/src/server.mjs
similarity index 79%
rename from server.mjs
rename to src/server.mjs
index 8e77983..1890e3f 100644
--- a/server.mjs
+++ b/src/server.mjs
@@ -2,7 +2,7 @@ import Fastify from 'fastify';
 import fastifyMiddie from '@fastify/middie';
 import fastifyStatic from '@fastify/static';
 import { fileURLToPath } from 'node:url';
-import { handler as ssrHandler } from './dist/server/entry.mjs';
+import { handler as ssrHandler } from '../dist/server/entry.mjs';
 
 const app = Fastify({ logger: true });
 
@@ -13,4 +13,4 @@ await app
   .register(fastifyMiddie);
 app.use(ssrHandler);
 
-app.listen({ port: 8080 });
\ No newline at end of file
+app.listen({ port: 4321 });
\ No newline at end of file