Sorry I’m not, but I thought customers would prefer a Kubernetes deployment than docker-compose? Isn’t docker-compose for the programmer’s machine, and isn’t K8s the big microservice organizer of large companies, requiring sysadmins to rewrite the file? Can K8s use docker-compose.yml files?
From a users point of view: If I'm interested in a project, I usually try to run it locally for a test drive. If you make me jump through many complex hoops just to get the equivalent of a "Hello World" running, that sucks big time.
From a customers point of view: Ideally you want both, local and cluster deployment options. Personally I prefer a compose file and a Helm chart.
In this specific case I'd argue that if you're interested in running an OSS project management product, you're likely a small/medium business that doesn't want to shell out for Atlassian - so it's also likely you don't have k8s cluster infrastructure, or people that would know how to operate one.