diff --git a/Dockerfile b/Dockerfile
index 2e15f25..82de9fe 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,12 +6,12 @@ WORKDIR /src
 
 # 先只复制 csproj，利用层缓存加速 restore
 COPY obsidian-mcp.csproj ./
-RUN --mount=type=cache,target=/root/.nuget/packages \
+RUN --mount=type=cache,target=/root/.nuget/packages,sharing=locked \
     dotnet restore obsidian-mcp.csproj
 
 # 复制全部源码并 publish
 COPY . .
-RUN --mount=type=cache,target=/root/.nuget/packages \
+RUN --mount=type=cache,target=/root/.nuget/packages,sharing=locked \
     dotnet publish obsidian-mcp.csproj \
     --configuration Release \
     --no-restore \