Docker on macOS prevents writing suid binaries to volumes, resulting in:
.../busybox-1.27.2-r7.trigger: line 20: /bin/bbsuid: Permission denied
The warning may be safely ignored, because we won't ever boot the sysroot.
- chroot 添加 boot runlevel 有问题
- 使用 ln -
ln -s /etc/init.d/$svc /etc/runlevels/boot