fix(docker): 修复 s6-overlay 脚本执行权限，解决 Windows 构建后 Permission denied

pack/Dockerfile

@@ -399,6 +399,9 @@ EOF
 # Initialize configurations
 COPY pack/rootfs/ /
 COPY docker-compose/grafana/grafana_dashboards/ /etc/dashboards/
+# Fix execute permissions for scripts (lost on Windows bind mount)
+RUN find /etc/s6-overlay -name '*.sh' -exec chmod +x {} + \
+    && find /etc/s6-overlay/scripts -type f ! -name '*.sh' -exec chmod +x {} +
 ## END Install Higress standalone components
 
 ## Install Skopeo