build(docker): 更新 Docker 镜像源为南京大学镜像地址

- 将 frontend Dockerfile 中的基础镜像从 gcr.io 切换到 gcr.nju.edu.cn
- 更新 offline Dockerfile 中的 nodejs20-debian12 镜像源
- 修改 export-cache.sh 脚本中的基础镜像列表为南京大学镜像
- 更新 Makefile.offline.mk 中的镜像拉取地址为本地镜像源
- 优化 export-cache.sh 脚本的格式和输出信息
- 添加缓存导出过程中的警告处理机制

Makefile.offline.mk

@@ -46,7 +46,7 @@ _offline-export-base-images:
 		"ghcr.nju.edu.cn/astral-sh/uv:latest" \
 		"python:3.12-slim" \
 		"python:3.11-slim" \
-		"gcr.io/distroless/nodejs20-debian12" \
+		"gcr.nju.edu.cn/distroless/nodejs20-debian12" \
 	); for img in "$${images[@]}"; do echo "  Pulling $$img..."; docker pull "$$img" 2>/dev/null || true; done'
 	@echo "  Saving base images..."
 	@docker save -o $(CACHE_DIR)/images/base-images.tar \
@@ -61,7 +61,7 @@ _offline-export-base-images:
 		ghcr.nju.edu.cn/astral-sh/uv:latest \
 		python:3.12-slim \
 		python:3.11-slim \
-		gcr.io/distroless/nodejs20-debian12 2>/dev/null || echo "  Warning: Some images may not exist"
+		gcr.nju.edu.cn/distroless/nodejs20-debian12 2>/dev/null || echo "  Warning: Some images may not exist"
 
 .PHONY: _offline-export-cache
 _offline-export-cache:

scripts/images/deer-flow-frontend/Dockerfile

@@ -45,7 +45,7 @@ RUN npm config set registry https://registry.npmmirror.com && \
 
 ##### RUNNER
 
-FROM gcr.io/distroless/nodejs20-debian12 AS runner
+FROM gcr.nju.edu.cn/distroless/nodejs20-debian12 AS runner
 WORKDIR /app
 
 ENV NODE_ENV=production

scripts/offline/Dockerfile.deer-flow-frontend.offline

@@ -55,7 +55,7 @@ RUN npm config set registry https://registry.npmmirror.com && \
 
 ##### RUNNER
 
-FROM gcr.io/distroless/nodejs20-debian12 AS runner
+FROM gcr.nju.edu.cn/distroless/nodejs20-debian12 AS runner
 WORKDIR /app
 
 ENV NODE_ENV=production

scripts/offline/export-cache.sh

@@ -35,7 +35,7 @@ BASE_IMAGES=(
     "ghcr.nju.edu.cn/astral-sh/uv:latest"
     "python:3.12-slim"
     "python:3.11-slim"
-    "gcr.io/distroless/nodejs20-debian12"
+    "gcr.nju.edu.cn/distroless/nodejs20-debian12"
 )
 
 for img in "${BASE_IMAGES[@]}"; do