Mininet with OpenFlow and OpenVSwitch from source in a Docker container. There are lots of mininet images around, none with public Dockerfiles. Ideally, I'll build this one with other controllers and functionality suitable for more than dabbling.
Pull or build the image.
docker run --privileged=true -it --rm imcp9/mininet:ovs1.4.2
Run mininet with userspace vswitches.
mn --switch user
Run ssh server(username/password: root/root)
/usr/sbin/sshd -D