Super basic helm chart for how you might deploy Strapi to Kubernetes. Please be sure to modify the values.yaml or use helmfile or something similar. For simplicity's sake, you can alway copy the values.yaml to values.prod.yaml too.
Strapi doesn't exactly deploy super well on Kubernetes without a persistent storage so this shows how you can do it with an NFS mount. BTW, this is mostly for demo use so use with your own caution.
If you want to change the NFS mount to something else, it's very easy. You'll want to fork this and change out the strapi-pv.yaml file. Just make sure your persistent storage is ReadWriteMany if you want it to be accessible from multiple nodes. Here's a link for you: https://kubernetes.io/docs/concepts/storage/persistent-volumes/#access-modes
https://github.com/ryuheiyokokawa/strapi-docker You can make a private registry or upload it wherever you want to. I just changed a few things and I encourage you to fork that one too. You'll need to do that if you want to add plugins and such from Strapi at the time of setup.
Just go use helm on your own. Here's the docs: https://helm.sh/docs/