Greenhouse Question - Light Leaks

noob-ish question here but I'd appreciate any input.

Looking at a small 10 X 10 greenhouse for my back yard.

If it were like 20ft from my patio, would my small incandescent porch light be bright enough to 'light up' the inside of the greenhouse and affect flowering?

I gotta let the dogs out and turn the light on a few times per night.

Thanks for any tips/experience you like to share!

Light during flowering can cause issues, get a green bulb , plants can't see it

If the porch light is as bright as a full moon,it should be ok