Allow regex match for Docker stages, add util
Allow regex match for Docker stages, add util

RickyCook/DockCI,sprucedev/DockCI-Agent,RickyCook/DockCI,sprucedev/DockCI,RickyCook/DockCI,RickyCook/DockCI,sprucedev/DockCI-Agent,sprucedev/DockCI,sprucedev/DockCI,sprucedev/DockCI