updated build

cms/docker/Dockerfile

@@ -1,5 +1,5 @@
 # docker build . -t docker.frappet.com/demo/qualifying-exam-cms:latest
-FROM node:18 as build
+FROM node:latest as build-stage
 WORKDIR /app
 # optimize build speed by copy all .xx folder and 
 COPY *.json .
@@ -9,7 +9,7 @@ COPY static ./static
 COPY src ./src
 # RUN ls
 RUN npm run build
-FROM node:18-alpine
+FROM node:lts-alpine
 WORKDIR /app
 COPY --from=build /app .
 EXPOSE 80