updated dockerfile

Dockerfile

@@ -1,14 +1,18 @@
-FROM mirror.gcr.io/library/node:20-bullseye-slim
-
+# Stage 1: Build
+FROM mirror.gcr.io/library/node:20-bullseye-slim AS builder
 WORKDIR /app
-
 COPY package*.json ./
-RUN npm install
-
+RUN npm ci --only=production
 COPY . .
-
 RUN npx prisma generate
 
-EXPOSE 3000
+# Stage 2: Production
+FROM mirror.gcr.io/library/node:20-alpine AS production
+WORKDIR /app
+COPY --from=builder /app/node_modules ./node_modules
+COPY --from=builder /app/prisma ./prisma
+COPY --from=builder /app/src ./src
+COPY --from=builder /app/package.json ./
 
-CMD ["node", "src/server.js"]
+EXPOSE 3000
+CMD ["node", "src/server.js"]