docker-machine : Machine management for a container-centric world ( https://docs.docker.com/machine/ )
vagrant : A tool for building and distributing development environments ( https://vagrantup.com/ )
virtualbox-modules : Kernel Modules for Virtualbox ( https://www.virtualbox.org/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a wuodan
For Paludis use this rsync : rsync://gentoo.zugaina.org/wuodan-portage
If you have a problem : ycarus(-at-)zugaina.org