Xcalar does not distribute software in docker containers nor VMware OVA's (or other VM packages) - however those are facilities that can help with provisioning once you have performed an installation of Xcalar. They allow you to capture the packaged state after the installation has been performed (or at some point during the installation process), and can be cloned or deployed again almost effortlessly, basically picking up at the point where the packaging was done.
If you wish to test quickly, the cloud deployments of Xcalar are likely the fastest, as they can be provisioned (and torn down) very quickly in a matter minutes typically.
The cloud vendors also offer their own forms of snapshotting or virtual machine cloning, so that you can capture a state, and replicate it quickly to other copies as desired.
If you have further questions, please follow up.