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by chowyuncat 1999 days ago
It’s an information leak. Who knows what attackers can learn about the host via this channel. Why leak it unless you have to?
1 comments

OK, that's not a complexity trade I'd be willing to make, but I can see it. However, that's unrelated to the nonsensical reason given by the article.
In traditional Docker installs, you (can) run as real UID 0 (and many containers do) with CAP_KILL [https://docs.docker.com/engine/reference/run/].