Cold brew on tap for refillable container?

Does anyone know where you can find cold brew on tap? I'm attempting to be more green this year, and instead of buying cold brew in a plastic container every week, I'd like to find a place where I can refill a container. I'm thinking something similar to filling a growler with beer/kombucha.

Fwiw, I have tried to make my own, and I am just not blessed with that gift. Thanks for the help!