Add optimized Dockerfile for deployment

Template-02/Dockerfile

@@ -0,0 +1,21 @@
+FROM node:22-alpine AS builder
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm install --legacy-peer-deps
+
+COPY . .
+RUN npm run build
+
+FROM node:22-alpine
+
+WORKDIR /app
+
+RUN npm install -g serve
+
+COPY --from=builder /app/dist ./dist
+
+EXPOSE 4321
+
+CMD ["serve", "-s", "dist", "-l", "4321"]