diff --git a/sync/Dockerfile b/sync/Dockerfile
index 4add938..d120c26 100644
--- a/sync/Dockerfile
+++ b/sync/Dockerfile
@@ -1,18 +1,17 @@
-# Stage 1: build TypeScript
+# Stage 1: build TypeScript + install all deps
 FROM node:20-slim AS builder
 WORKDIR /app
 COPY package*.json ./
 RUN npm ci --include=dev
 COPY tsconfig.json ./
 COPY src ./src
-RUN npm run build
+RUN npm run build && npm prune --production
 
-# Stage 2: runtime with Playwright
+# Stage 2: runtime with Playwright — copy built artifacts, no npm install
 FROM mcr.microsoft.com/playwright:v1.47.0-jammy
 WORKDIR /app
-COPY package*.json ./
-RUN npm ci --omit=dev
 RUN npx playwright install chromium --with-deps
+COPY --from=builder /app/node_modules ./node_modules
 COPY --from=builder /app/dist ./dist
 
 CMD ["node", "dist/index.js"]