Allow passing mount propagation option shared, slave, or private as volume property. For example. docker run -ti -v /root/mnt-source:/root/mnt-dest:slave fedora bash Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Upstream-commit: a2dc4f79f260247afe55ab7117c9de02a769d883 Component: engine