What's the way to deploy a resource once on a helm chart that is deployed multiple times?
I've eventually created an umbrella chart with alias:

dependencies:
  - name: app
    repository: file://./app
    version: 1.0.0
    alias: child1
  - name: app
    repository: file://./app
    version: 1.0.0
    alias: child2


And in values.yaml i've changed the needed values,
then added the grafana dashboard in the bundled yaml file.