Openshift Gitlab Runner Operator

hi
I am trying to use Gitlab Runner Operator on Openshift 4. My problem is about DIND (Docker in Docker) permission problem. I need a docker engine to build new dockers. So I have an image containing Docker Engine. I tried to RUN “dockerd” command in my image by CMD command in the docker file. But I have an error because I think the reason is “privileged” tag. I need to give privileged permission for my docker containers which I set it in gitlab-ci.yaml file.
thanks