05ec0188fa
The warning should be ignored on cgroup v2 hosts. Relevant: https://github.com/moby/moby/pull/41894/commits/8086443a449af8ef5c5b0574de8957df7e52f296 Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>