We should permit to override the operator image (and maybe other stuff) in the operator helm chart. More details here

The main issue is that the helm chart are generated by the QOSDK and is not customizable. 

The alternative is to use the quarkus helm extension and disable the QOSDK with

quarkus.operator-sdk.helm.enabled=true

The resulting helm have some differences that needs to be checked and verified. Also verify if a proper configuration of helm extension can lead to a more similar helm chart.