The Pod is invalid: spec.containers[0].restartPolicy: Forbidden: may not be set for non-init containers

[kishor7007]

Running kubectl exec-as -u root -n default -c istio-proxy -d sleep-db7f48c4-spbgw -- /bin/bash command throws below error
The Pod "kishor-1" is invalid: spec.containers[0].restartPolicy: Forbidden: may not be set for non-init containers

[dvglab]

The same issue for me:
kubectl exec-as -u root -n dev -c backend -d backend-77bffd84b-66hzg -- /bin/bash
The Pod "dvg-1" is invalid: spec.containers[0].restartPolicy: Forbidden: may not be set for non-init containers