Link to new guide. Added a quickstart contributor guide for experienced people.
Converting narrative style to procedures for easier use. I think there is something missing in the
release publishing section...but it looks like it was missing in the original.
Updates per thaJeztah
Edits per Fred
Updating with comments from Sven
Signed-off-by: Mary Anthony <mary@docker.com>
Upstream-commit: fdbec264111ac20b06cdd9b885fe47415a6495e4
Component: engine
e1ebdbecb2