Off image storage for docker transaction service

Now we have a docker image for JTS we need to look at making the state available after the image(s) go away. Remember that docker produces immutable images, so any state change that occurs within the running instance will be lost when the image dies, is taken out of service etc. Currently the docker image for JTS we have will store all of the transaction log information within the image, which is fine for testing purposes but not for a running deployment.