Kubernetes example manifest

[sando38]

Hi Holger,

as discussed, here is the example manifest. It should be altered in accordance to one's needs.

It uses the official nginx nginx:1.22-alpine-perl image currently as base and mounts some configmaps into it. A note should be given to potential users, that the manifest should be updated also in regards of new image version, if any, etc.

Deployment into kubernetes may be achieved with kubectl apply -f <filename> command.