Custom IDE image possible on Gitpod self-hosted?


I know about the private beta for the custom IDE image on but I’d like to try this out in a self hosted Gitpod for a proof of concept.
Is this functionality also present in the 0.7.0-beta1 images for the self-hosted installers?

Will resp. is it possible to use a custom IDE image in the free version of Gitpod self-hosted? I know that users need the ideSettings permission to specify a custom IDE. Can this be given without the admin dashboard?