Create an OpenLogReplicator Oracle image

While the OpenLogReplicator docker image can be used with our Oracle images, it requires that our Oracle images write the contents of the database out to a shared volume and this requires additional configuration in Oracle which we don't currently support in an automated way.

We should build a new Oracle image that includes LogMiner + OpenLogReplicator and only start OpenLogReplicator in the image if and only if an environment variable has been set, i.e. "USE_OPENLOGREPLICATOR=true".