How to run Yaks tests from CI ?

Hello yaks team
I am trying to figure out how to use yaks in CI.
My project team is developing microservices that work with Kafka, everything installed as pods in an Openshift cluster.
We use Azure pipelines for CI.

My idea is to use a docker container with yaks installed towards our Openshift installation from a pipeline worker (Azure).
I have found a Docker container with yaks that seems official on DockerHub: https://hub.docker.com/r/citrusframework/yaks
However, it has no documentation, link to sources or similar.
It doesnt have any instructions for how to run it. No kubectl installed inside.
I tried to execute `yaks list` inside the container, but it fails with an error:
```
Error: cannot get command client: invalid configuration: no configuration has been provided, try setting KUBERNETES_MASTER environment variable
```
I am missing instructions for how to run the `helloworld.feature` could you help to point me in the right direction?