Kubernetes
Running Kimai inside a Kubernetes cluster
Kubernetes is a container orchestration tool. As such it can use the Kimai docker container in the same manner as shown in the docker section.
Helm Chart
There is a prepared Helm chart, provided by a community user, who provides further information and an exemplary set of YAML files defining a complete Kimai setup on Kubernetes.
@robjuz is managing the Kimai helm charts at his GitHub repository: https://github.com/robjuz/helm-charts/