The current check tests whether the file ./sbin/init exists and belongs to 0/0. While the test itself is usefull, it can not be performed that way for several reasons:
1) Depending on how the tarball is created, the path can also be sbin/init.
2) Depending on how the tarball is created, the user can also be root/root.
3) Depending on the OS (e.g. Debian 9) /sbin is a symlink to /usr/sbin so there is no entry for /sbin/init.
The current check tests whether the file
./sbin/initexists and belongs to0/0. While the test itself is usefull, it can not be performed that way for several reasons: 1) Depending on how the tarball is created, the path can also besbin/init. 2) Depending on how the tarball is created, the user can also beroot/root. 3) Depending on the OS (e.g. Debian 9)/sbinis a symlink to/usr/sbinso there is no entry for/sbin/init.