diff --git a/.ci/Dockerfile b/.ci/Dockerfile
index 50b1a21..d419f07 100644
--- a/.ci/Dockerfile
+++ b/.ci/Dockerfile
@@ -1,52 +1,35 @@
-# 第一阶段：构建基础环境
-FROM ubuntu:24.04 AS builder-base
+FROM ubuntu:24.04
 
+# 1. 设置镜像源（可选，用于加速）
 RUN sed -i 's/archive.ubuntu.com/mirrors.aliyun.com/g' /etc/apt/sources.list && \
     sed -i 's/security.ubuntu.com/mirrors.aliyun.com/g' /etc/apt/sources.list
 
+# 2. 一次性安装所有依赖（工具链、库、CI工具）
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
         wget gnupg ca-certificates \
         clang-19 lld-19 libc++-19-dev libc++abi-19-dev \
         mingw-w64 g++-mingw-w64 \
-        tar git curl \
+        git tar curl \
         && rm -rf /var/lib/apt/lists/* && \
     update-alternatives --install /usr/bin/clang clang /usr/bin/clang-19 100 && \
     update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-19 100 && \
     ln -sf /usr/bin/ld.lld-19 /usr/bin/ld.lld
 
+# 3. 安装xmake
 RUN wget -O /usr/local/bin/xmake \
     https://git.fig-lang.cn/PuqiAR/xmake-binary-copy/raw/commit/989d1f2dabb0bc8d5981a5f900c2cf7c2ac78ee4/xmake-bundle-v3.0.5.linux.x86_64 && \
     chmod +x /usr/local/bin/xmake
 
-# 第二阶段：创建最终镜像
-FROM ubuntu:24.04
-
-# 安装CI运行时工具
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends \
-        git tar curl ca-certificates \
-        # 关键：安装clang运行时库，解决 libclang-cpp.so.19.1 依赖
-        libclang-rt-19-dev \
-        && rm -rf /var/lib/apt/lists/*
-
-# 复制编译器、xmake和库文件
-COPY --from=builder-base /usr/local/bin/xmake /usr/local/bin/xmake
-COPY --from=builder-base /usr/bin/clang++ /usr/bin/clang++
-COPY --from=builder-base /usr/bin/clang /usr/bin/clang
-COPY --from=builder-base /usr/bin/ld.lld /usr/bin/ld.lld
-COPY --from=builder-base /usr/x86_64-w64-mingw32 /usr/x86_64-w64-mingw32
-# 关键：复制完整的LLVM库目录，而不仅仅是/usr/lib/llvm-19
-COPY --from=builder-base /usr/lib/x86_64-linux-gnu /usr/lib/x86_64-linux-gnu
-
-# 设置非root用户
+# 4. 创建非root用户
 RUN useradd -m -s /bin/bash builder
-
 USER builder
 WORKDIR /home/builder
 
-# 验证环境
+# 5. 验证环境
 RUN xmake --version | head -1 && \
     clang++ --version | head -1 && \
     git --version && \
-    echo "✅ CI环境就绪"
\ No newline at end of file
+    ls /usr/include/c++/v1/cerrno >/dev/null 2>&1 && echo "✅ 标准库头文件存在" && \
+    ls /usr/x86_64-w64-mingw32/include/cerrno >/dev/null 2>&1 && echo "✅ MinGW头文件存在" && \
+    echo "环境就绪"
\ No newline at end of file