Note caveat with detaching using key sequence
Note caveat with detaching using key sequence

This has come up a few times, e.g. https://github.com/moby/moby/issues/20864 and https://github.com/moby/moby/issues/35491

Signed-off-by: Ben Creasy <73675debcd8a436be48ec22211dcf44fe0df0a64@bencreasy.com>

docker/cli,docker/cli,cpuguy83/cli,cpuguy83/cli,thaJeztah/cli,thaJeztah/cli