Hello @nskalis , you’re question is related to Kubernetes knowledges, not to Keycloak. You should consider learning more about Kubernetes and the concept of Kubernetes operators and custom resources before going further.
If I am mistaken it and you already have good knowledge of Kubernetes, you should review your question because it doesn’t make sense to me.
This part of the question just demonstrate that you don’t understand the concept of imagePullPolicy in kubernetes context. It is not specific to keycloak. A correct question would have been “how to set the imagePullPolicy ?”. And I would answer that with the same answer I made above.