[SOLVED] Equivalent of DRONE_NETWORKS in 1.0?

I am looking for a way to attach the drone build containers to another docker network. In 0.8 i used DRONE_NETWORKS but cannot find an alternative on 1.0. I found DRONE_RUNNER_NETWORKS by digging into the agent binary but it seems to do nothing.

Any ideas on how to achieve it? is this implemented?

edit: 1.0.0-rc.5 seems to solve this, now i can reach my private registry mirror with DRONE_RUNNER_NETWORKS