wrestling with #Ghost and the #Discourse integration.. so far, I've found a few gaps in the instructions:
1) contrary to instructions found at https://ghost.org/integrations/discourse/, Discourse does not provide a snippet of code. Well, I'll just copy that from the page there, hoping it'll work.
2) the trailing / in the URL for the discourseUrl super important and mandatory. That should be spelled out.
3) if you don't tell Discourse to really server everything over https, you'll get mixed-content-security errors instead of an integration

Still, it's not yet working for me, so let's see what other gaps there are that I haven't understood yet.

Ah, the joys of #selfhosting.