Refactor Dockerfile to use multi-stage build and optimize image size

Dockerfile

@@ -1,15 +1,14 @@
-# syntax=docker/dockerfile:1
 # build stage
 FROM node:lts-alpine as builder
-WORKDIR /apkt
+WORKDIR /app
 COPY package*.json ./
 RUN npm install
 COPY . .
 RUN npm run build
 # production stage
 FROM nginx:stable-alpine
-COPY --from=builder /apkt/dist /usr/share/nginx/html
-COPY --from=builder /apkt/nginx.conf /etc/nginx/nginx.conf
+COPY --from=builder /app/dist /usr/share/nginx/html
+COPY --from=builder /app/nginx.conf /etc/nginx/nginx.conf
 EXPOSE 32166
 CMD ["nginx", "-g", "daemon off;"]