For those that wondering as well: GoCD is a continuous delivery server, but it’s not written in Go. It’s a Java/Ruby on Rails project: https://github.com/gocd/gocd
And it was originally developed by ThoughtWorks and looked fairly geared towards Enterprise and was not Open Source, originally. They open sourced it in early 2014 [0].
Fwiw I've been using GoCD (though not on Kubernetes) for around three years now, and quite like it. It might miss some convenience features, but it has very good quality, and a friendly and helpful community.
Love some of the ideas in gocd, pipelines in xml I don’t love though, currently enjoying those ideas implemented in a less purist way in gitlab.
If you are trying to test kube deployed apps in kube ci, gocd being a good example, use kind: