pidns reaper requirement #532
Description
Hi, it is unclear to me why the reaper requires a pidns to function. It seems like it would be possible to still reap child processes via waitpid? Unless I am missing something?
This requirement prevents rootlesskit from cleaning up zombie processes in the context of buildkit if a build is killed and buildkit is running in rootless mode.
More information is available here: moby/buildkit#2855