I wouldn't recommend this approach, since regexes are fidgety to write and worse to read (believe me, I've seen millions). They're easy to get wrong, and engines may differ in subtle but important ways. The fact that the top ten regexes contains at least one such subtle bug should suggest that regexes are, in fact, not a good tool for input validation.
Украинцам запретили выступать на Паралимпиаде в форме с картой Украины22:58
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If you enable --privileged just to get CAP_SYS_ADMIN for nested process isolation, you have added one layer (nested process visibility) while removing several others (seccomp, all capability restrictions, device isolation). The net effect is arguably weaker isolation than a standard unprivileged container. This is a real trade-off that shows up in production. The ideal solutions are either to grant only the specific capability needed instead of all of them, or to use a different isolation approach entirely that does not require host-level privileges.
Россиянин решил растопить сердце бывшей возлюбленной и сжег ее дом08:47
was vulnerable to path traversal due to using os.path.commonprefix()