diff --git a/cms/docker/Dockerfile b/cms/docker/Dockerfile
index 095b7f8..9952f02 100644
--- a/cms/docker/Dockerfile
+++ b/cms/docker/Dockerfile
@@ -1,5 +1,5 @@
 # docker build . -t docker.frappet.com/demo/qualifying-exam-cms:latest
-FROM node:20-alpine as build-stage
+FROM node:20-alpine AS build-stage
 WORKDIR /app
 # optimize build speed by copy all .xx folder and 
 COPY *.json .
@@ -7,11 +7,11 @@ COPY *.*s .
 RUN npm i
 COPY static ./static
 COPY src ./src
-# RUN ls
 RUN npm run build
-FROM node:lts-alpine
+
+FROM node:lts-alpine AS production-stage
 WORKDIR /app
-COPY --from=build /app .
+COPY --from=build-stage /app .
 EXPOSE 80
 ENV PORT=80
-CMD ["node", "./build/index.js"]
\ No newline at end of file
+CMD ["node", "./build/index.js"]