diff --git a/Dockerfile.prod b/Dockerfile.prod
index 0ca4e44..6f955b9 100644
--- a/Dockerfile.prod
+++ b/Dockerfile.prod
@@ -19,7 +19,7 @@ COPY app/ ./
 RUN pnpm build || npm run build
 
 # 第二阶段：构建后端 + 下载 Playwright Chromium
-FROM mcr.microsoft.com/dotnet/sdk:6.0 AS backend-builder
+FROM mcr.azurecr.cn/dotnet/sdk:6.0 AS backend-builder
 
 WORKDIR /src
 
@@ -44,7 +44,7 @@ ENV PLAYWRIGHT_BROWSERS_PATH=/ms-playwright
 RUN npx -y playwright@1.44.0 install chromium
 
 # 第三阶段：运行镜像
-FROM mcr.microsoft.com/dotnet/aspnet:6.0 AS final
+FROM mcr.azurecr.cn/dotnet/aspnet:6.0 AS final
 
 WORKDIR /app