diff --git a/templates/extra/Dockerfile.JS.sern b/templates/extra/Dockerfile.JS.sern
index 2631ee3..e41e809 100644
--- a/templates/extra/Dockerfile.JS.sern
+++ b/templates/extra/Dockerfile.JS.sern
@@ -1,5 +1,7 @@
 FROM node:latest
 
+RUN npm install -g @sern/cli
+
 WORKDIR /app
 
 COPY package.json ./
@@ -8,4 +10,6 @@ RUN npm install
 
 COPY . .
 
-CMD node src/index.js
\ No newline at end of file
+RUN sern build
+
+CMD node .