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@@ -41,6 +41,12 @@ RUN test -d /home/user/ldraw/parts && \
     echo "✓ LDraw parts directory exists" || \
     (echo "✗ LDraw installation failed" && exit 1)
 
+# 以 root 身份预创建 X11 socket 目录（解决 Xvfb 权限问题）
+RUN mkdir -p /tmp/.X11-unix && \
+    chmod 1777 /tmp/.X11-unix && \
+    chown root:root /tmp/.X11-unix && \
+    echo "✓ X11 socket directory created"
+
 # 切换到普通用户
 USER user
 ENV HOME=/home/user \
@@ -65,9 +71,9 @@ RUN pip install --no-cache-dir --upgrade pip && \
 # 创建启动脚本（先启动 Xvfb，再运行应用）
 RUN echo '#!/bin/bash\n\
 echo "🖥️  启动虚拟显示服务器 Xvfb..."\n\
-Xvfb :99 -screen 0 1024x768x24 -ac +extension GLX +extension RENDER +render -noreset &\n\
+Xvfb :99 -screen 0 1024x768x24 -ac +extension GLX +extension RENDER +render -noreset -nolisten tcp -nolisten unix &\n\
 sleep 2\n\
-echo "✅ Xvfb 已启动 (DISPLAY=:99)"\n\
+echo "✅ Xvfb 已启动 (DISPLAY=:99, 无 Unix socket)"\n\
 echo "🚀 启动应用..."\n\
 exec python code/demo.py' > /home/user/start.sh && \
     chmod +x /home/user/start.sh