ContainerImage.JSONServer/charts/json-server/templates/configmap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: {{ .Release.Name }}-configmap
data:
  db.json: |
    {
      "metacluster": {
        "version": "3.2.0",
        "title": "json-server",
        "author": "typicode"
      },
      "foo": { "bar": "woot" }
    }