diff --git a/apps/web/Dockerfile b/apps/web/Dockerfile
index 6912feca..7a0afdc7 100644
--- a/apps/web/Dockerfile
+++ b/apps/web/Dockerfile
@@ -1,7 +1,7 @@
 # AWOOOI Web - Production Dockerfile
 # syntax=docker/dockerfile:1
 # 首席架構師 Review C1 (2026-04-05 Claude Code): BuildKit inline cache 需要 ARG 宣告
-ARG BUILDKIT_INLINE_CACHE=0
+ARG BUILDKIT_INLINE_CACHE=1
 
 FROM node:20-alpine AS base
 
@@ -45,7 +45,10 @@ ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL}
 ENV NEXT_PUBLIC_SENTRY_DSN=${NEXT_PUBLIC_SENTRY_DSN}
 ENV NEXT_TELEMETRY_DISABLED=1
 
-RUN pnpm turbo build --filter=@awoooi/web
+# 2026-04-06 ogt: --mount=type=cache 持久化 .next/cache，跨 build 增量編譯
+# 只有變更的頁面重新編譯，未變更頁面直接用 cache → 節省 3-4 min
+RUN --mount=type=cache,target=/app/apps/web/.next/cache \
+    pnpm turbo build --filter=@awoooi/web
 
 FROM base AS runner
 WORKDIR /app