Information on Container Aliases is requested by Paul Brown (Snr SA) based on a customer request.

Maciej's blog post for reference:
http://mswiderski.blogspot.com/2016/09/improved-container-handling-and-updates.html

From Ivo:
For 7.5, we can add it to this story and chapter Project deployment in Business Central RHPAM 7.5, chapter 2.5 Building and deploying a project in Business Central [1]. It already mentions aliases when deploying a project so an explanation what it is would be nice there.

[1] https://access.redhat.com/documentation/en-us/red_hat_process_automation_manager/7.5/html/packaging_and_deploying_a_red_hat_process_automation_manager_project/project-deployment-central-con_packaging-deploying#project-build-deploy-central-proc_packaging-deploying

For 7.7 release or later, we can add the same / similar content to the new Process engine doc.