Pull azure container registry image in kubernetes helm
Your kubernetes cluster needs to be authenticated to the container registry to pull images, generally this is done by a docker secret:
kubectl create secret docker-registry regcred --docker-server=<your-registry-server> --docker-username=<your-name> --docker-password=<your-pword> --docker-email=<your-email>
If you are using AKS, you can grant cluster application id pull rights to the registry, that is enough.
Reading: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/