Howdy! I'm lone writer here at Caringo, and I've been developing our product documentation on Confluence Server for years. We use Jira for engineering and Jira Service Desk for our support tickets. My battle now is figuring out how to author docs within the k-base that Jira Service Desk uses so that customers can pull up that content even though they lack named licenses.
If you have a KB space setup and you create a new page in that space it should be accessible to your customers via the portal. I may be missing your point but here is an article you may wish to read if you are just getting started w/ KB. The link directs you to server 3.13 documentation but you can easily change to Cloud or another version. I would also suggest checking the Community for any questions you have as there are always great people there to help quickly keep you moving forward.
cheers,
j
Right, but only pages in that particular space are accessible to them. Makes figuring out how to author pre-release content tricky, as Scroll Versions isn't available on Cloud, for precisely pushing in released content. If we're super careful, we can manage pre-release content as Draft pages and Unpublished Changes, but I'm still testing other options.