Yep! I have one right now. Its 5x5x6h I put in 4 windows on the top panels and framed out a front door and window and nesting box. I didn't like the double doors....poor security.
I got the shed for free on freecycle.org
I am, however, building a new coop this summer as I feel the Rubbermaid shed will not hold in any heat this winter and we get some killer winters in Rhode Island.