拥抱clang, cpp 23我来了

.ci/Dockerfile

@@ -1,29 +1,33 @@
-FROM ubuntu:24.04  # 改用 Ubuntu 24.04，自带 GCC 13
+FROM ubuntu:24.04
 
-# 设置非root用户
-RUN useradd -m -s /bin/bash builder
-
-# 1. 安装基础工具（Ubuntu 24.04 已有 GCC 13）
+# 1. 安装LLVM/Clang 17+工具链（Ubuntu 24.04官方源已包含）
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
         wget tar git curl ca-certificates \
         build-essential \
-        && rm -rf /var/lib/apt/lists/*
+        clang-17 lld-17 libc++-17-dev libc++abi-17-dev \
+        && rm -rf /var/lib/apt/lists/* && \
+    update-alternatives --install /usr/bin/clang clang /usr/bin/clang-17 100 && \
+    update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-17 100 && \
+    update-alternatives --install /usr/bin/ld ld /usr/bin/ld.lld-17 100
 
-# 2. 切换到builder用户安装xmake
+# 2. 设置非root用户
+RUN useradd -m -s /bin/bash builder
+
+# 3. 切换到builder用户安装xmake
 USER builder
 WORKDIR /home/builder
 
-# 下载并安装xmake
 RUN wget -O xmake https://git.fig-lang.cn/PuqiAR/xmake-binary-copy/raw/commit/989d1f2dabb0bc8d5981a5f900c2cf7c2ac78ee4/xmake-bundle-v3.0.5.linux.x86_64 && \
     chmod +x xmake && \
     ./xmake --version 2>&1 | head -1
 
+# 4. 切回root，将xmake安装到系统路径
 USER root
 RUN cp /home/builder/xmake /usr/local/bin/xmake && \
     chmod +x /usr/local/bin/xmake
 
-# 3. 验证编译器版本
-RUN gcc --version && g++ --version
+# 5. 验证环境
+RUN clang++ --version && xmake --version
 
 USER builder