Relative Dolly?

Hello! I'd like to have the dolly track itself move with my camera's target, so that the camera is dollying around a moving target.

While this could probably be hacked together with a simple script on the dolly's transform that copies the position from a target transform, I'm wondering if this is the intended way to achieve this, since it would seem to have multiple downsides (such as not working great outside of play mode).

Is there a "correct" way I should be doing this? Thanks!