Ran through the install using
discourse-setup (I don’t think I ever have yet, so no time like the present!) and the following error showed up:
Checking your domain name . . . WARNING:: This server does not appear to be accessible at dotest.example.net:443. A connection to http://dotest.example.net (port 80) also fails. This suggests that dotest.example.net resolves to the wrong IP address or that traffic is not being routed to your server. Google: "open ports YOUR CLOUD SERVICE" for information for resolving this problem. You should probably answer "n" at the next prompt and disable Let's Encrypt. This test might not work for all situations, so if you can access Discourse at http://dotest.example.net, you might try anyway.
I believe this happened as
nc isn’t installed so it couldn’t properly run the test. We should ensure
nc is available before erroring out on this check.