Working on a containerized demo
Adding Jetty in the container

Test assumes access to Jetty via localhost URL, so it's easier to
package everything in one image.

That way the demo is easier to run, too.
Original upstream version
Added sshd into the container.

Needed to start/stop Jetty
Merge commit '2b91ed141c557c8cd86cd50336cd4e739277ca5a'