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Looking into why the dokku example site isn't loading when I visit the URL in my browser. I had to add an A record for the subdomain in Cloudflare. But I'm now getting a message saying there's a host error, while dokku's logs don't show any issues (or apparently even any requests at all). I'm wondering if this is maybe SSL related. Deleted DNS records from Digital Ocean for domains I have DNS records for in Cloudflare.
Continuing to look into the CORS error I'm getting when my frontend tries to make an API request to my backend; it seems my backend dokku app wasn't deployed for some reason; destroyed my existing go dokku app and recreated it and then struggled with an error for a while before realizing I had the same issue a few days ago and the solution was to run `dokku builder:set backend-app build-dir backend`; now getting an error saying the download for my specified version of Go is "unknown to the buildpack"; after much trial-and-error I realized the problem was that Dokku has a stupid error message that makes it sound like it has already automatically chosen a Go buildpack when in fact it has not. I was additionally getting confused because I was seeing Dokku installing Go and not realizing that was because of my +heroku instruction in my go.mod file rather than Dokku automatically using a Go buildpack. The solution was to specify a Go buildpack for my app with `dokku buildpacks:add <my-app> heroku/go`. Now getting a new error: "Failed to connect to database". Fixed it by switching my code to use the `DATABASE_URL` environment variable that Dokku creates for your code to connect to the db. My `git push dokku main` finally succeeded, but I'm still getting a CORS error. Eventually figured out it was because my Dokku app name was `whatdo-backend` when I had forgotten that that would also be the name of the subdomain, so I had to delete the app and recreate it with the name `api`. I also created a `/ping` health-check URL to help me debug this more quickly. I'm now getting a 521 error, I think maybe because Dokku is running on http and Cloudflare is reaching out via https?
spin up two dokku vps live & staging