diff --git a/Dockerfile b/Dockerfile
index 021bc15..60c86e4 100755
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,8 @@
 # ==========================================
 # 1. Build Stage
 # ==========================================
-FROM node:22-alpine AS builder
+# 使用国内可访问的 DaoCloud 镜像源（Docker Hub 在国内不可达）
+FROM docker.m.daocloud.io/library/node:22-alpine AS builder
 
 # 启用 corepack 并安装 pnpm
 RUN corepack enable && corepack prepare pnpm@9 --activate
@@ -24,7 +25,7 @@ RUN pnpm run build
 # ==========================================
 # 2. Production Stage
 # ==========================================
-FROM node:22-alpine AS runner
+FROM docker.m.daocloud.io/library/node:22-alpine AS runner
 
 # 设置工作目录
 WORKDIR /app
diff --git a/README.md b/README.md
index 61d2172..2309a82 100644
--- a/README.md
+++ b/README.md
@@ -78,6 +78,8 @@ pnpm dev
 脚本从环境变量读取 SWR 凭据（`SWR_REGISTRY`、`SWR_NAMESPACE`、`SWR_USERNAME`、`SWR_PASSWORD`），
 多架构（`linux/amd64,linux/arm64`）构建并推送到华为云 SWR。
 
+Dockerfile 基础镜像使用国内可访问的 DaoCloud 镜像源（`docker.m.daocloud.io/library/node:22-alpine`，Docker Hub 在国内不可达）。
+
 本地启动（使用 SWR 镜像，与生产一致）：
 
 ```bash
diff --git a/build-and-push.sh b/build-and-push.sh
index fca5af4..7fd4b18 100755
--- a/build-and-push.sh
+++ b/build-and-push.sh
@@ -54,6 +54,7 @@ fi
 # 3. 多架构构建并推送
 echo ">>> [3/4] 构建并推送: ${FULL_IMAGE} (${PLATFORMS})"
 docker buildx build \
+  --builder "${BUILDER_NAME}" \
   --platform "${PLATFORMS}" \
   --push \
   -t "${FULL_IMAGE}" \