use the beta-warning area to tell the user what VERSION of docker, git
branch, and links to the official release version docs are.
requires / extends PR #5272
Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)
Upstream-commit: dc982d3053bf46e03ad27c29d4662a9d5ba5e819
Component: engine