This uses "," instead of spaces so that the flags are parsed correctly and also does not do a strings.Split on an empty string because strings.Split will return a slice with one element, and empty string causing parsing to fail when it validates that the cap exists. Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael) Upstream-commit: 47917135daa38b40a1a3ee11f31153b031ea7963 Component: engine