Update md2man script to generate manpages inside docs/man/ directory. Update usage documentation in the readme to point to the new docs/man path. Update Ubuntu makefile to use new path to manpages Docker-DCO-1.1-Signed-off-by: Matthew Heon <mheon@redhat.com> (github: mheon) Upstream-commit: fa3ac2d37032583a7c1171c24d71fbf93e330acc Component: engine