Daytime chicken run ideas?

Hi all,
I am looking to build a chicken run in my yard for my two ladies. I want to keep it simple to keep my dog away from them during the day. They normally have free range of the whole garden and go back to their coop at night but I got a new dog who tried to kill one on the first day. They’ve been kept separately ever since.
I’d love to let my dog out during the day while supervised. I was planning on using some star pickets and chicken wire and add a gate (no roof) for when they are outside together. The problem with their area is they just fly over the gate but given how frightened they are of the dog I think if they can see the dog they will just stay in the run I build them while she is outside? What do you all think. Thanks