Jetpack Docker, VM or OVA for validation

We are evaluating Jetson Xavier AG for our clients. The client would like to know if there is a Jetpack docker image for them to validate for patches etc.

Also is flashing the only way to get Jetpack on to a device, is there a way for images and patches to be pushed out to devices as the client has a team that does the imaging and patching. They would like every image or patch to be tested before installed on the device .