Automatic door for sheep that closes at night?

I do not have sheep yet, so this is all theoretical. I do have chickens and LOVE my solar-powered, automatic door with a light sensor - opens in the morning and closes at dusk. Does this sort of thing exist for sheep? Or what would I need to build one? Would the sheep go into a shed for protection at night automatically, or would I also need an automatic feeder? (I figure I could rig an auto dog/cat feeder to dispense some grain to motivate them if needed.)

My work hours have me getting up late in the morning and getting home well after dusk through most of the year, so opening and closing a shed manually wouldn't protect them well enough from the local coyotes. They have killed even adult sheep around here. Lambs only survive if closed up at night or there is a livestock guarding animal (not really feasible for me).

I am not aware of such a creature, but it would seem to be possible to rig an electric garage door with a light sensing switch.

This might work:

Now you can have one for your machine shed, horse barn, or shop doors. Propel’s award-winning, patented system automates your sliding shed doors. Now you don’t have to fight your doors or worry that a slight breeze will make it nearly impossible to open or close them. There are 3 main parts to the system.

https://www.amazon.com/Automatic-Opener-Split-Sliding-opening/dp/B00KDQR8CY?th=1

John F Dean wrote:I am not aware of such a creature, but it would seem to be possible to rig an electric garage door with a light sensing switch.

I had no idea that light sensing switches are a thing! That would make this much easier. Just have to figure out how to make the door open/close when the power turns on/off via the light switch? Since with a garage door both opening and closing require power on. This is outside my knowledge areas.

Check Amazon for the switches.  There are a variety of choices.  It will take a little playing with the wiring.   Another option would be a timer.