diff --git a/Dockerfile b/Dockerfile
index d47710f..7f608b8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,6 @@
 # ================================================================
 FROM node:20-slim AS builder
 
-# pnpmの準備
 ENV PNPM_HOME="/pnpm"
 ENV PATH="$PNPM_HOME:$PATH"
 RUN corepack enable
@@ -22,13 +21,12 @@
 COPY packages/shared ./packages/shared
 COPY apps/server ./apps/server
 
-# 4. ビルド（共通ライブラリ -> サーバーの順）
+# 4. ビルド
 RUN pnpm --filter @repo/shared build
 RUN pnpm --filter server build
 
-# 5. 開発用ライブラリを削除（本番に必要なものだけ残す）
-ENV CI=true
-RUN pnpm prune --prod
+# 5. pnpm deploy を使用して、serverアプリを /app/out に独立させる（--prodで本番環境用のみ抽出）
+RUN pnpm --filter server --prod deploy /app/out
 
 # ================================================================
 # Stage 2: Runner (実行専用の軽量環境)
@@ -37,18 +35,12 @@
 
 WORKDIR /app
 
-# Builderステージから、動かすのに必要なファイルだけをコピー
-COPY --from=builder /app/node_modules ./node_modules
-COPY --from=builder /app/apps/server/node_modules ./apps/server/node_modules
-COPY --from=builder /app/apps/server/dist ./apps/server/dist
-COPY --from=builder /app/apps/server/package.json ./apps/server/
-COPY --from=builder /app/packages/shared/dist ./packages/shared/dist
-COPY --from=builder /app/packages/shared/package.json ./packages/shared/
+# Builderステージで抽出した独立環境（/app/out）をそのままコピーするだけ
+COPY --from=builder /app/out ./
 
 # 実行環境の設定
 ENV NODE_ENV=production
 USER node
 
 # サーバーを起動
-WORKDIR /app/apps/server
 CMD ["node", "dist/index.js"]
\ No newline at end of file