The guide is aimed at developers working in virtual environments that
need to build or run several controller-0 setups (specifically, to
developers in need of running the Ansible bootstrap playbook multiple
times).
By configuring a local registry and downloading the needed images
beforehand, all subsequent installations can point to this local
registry to download images from it to the controller-0. Not going to
the internet everytime, devs are not subject to public registries' rate
limits.
Story: 2005051
Task: 47895
Partial-Bug: 1834504
Partial-Bug: 1888610
Change-Id: Ie3e3cbc09030a6491f7b573a4ea5fd57e3158d54
Signed-off-by: Bruno Muniz <bruno.muniz@encora.com>