template/deployments/helm/charts/templates/configmap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: {{ .Config.GetVariableValue "APPNAME" | printf "{{ include \"%s.fullname\" . }}-config" }}
  labels:
    {{ .Config.GetVariableValue "APPNAME" | printf "{{- include \"%s.labels\" . | nindent 4 }}" }} 
{{- `
  namespace: {{ .Values.namespace }}
` -}}
data:
{{- `
{{- range $key, $value := .Values.envVars }}
  {{ $key }}: {{ $value }}
{{- end }}
` -}}