Animal Shelter needs advice: How would you install a steel garage door
as a roof over an outdoor kennel?

We have nine steel pipe kennels to do, each 10' X 10', so we need to do
this the easiest/quickest/cheapest way. The garage doors (donated to
us) have a minimal metal framework and we want to mount them about 2
feet higher on one side to act as a shed roof. Our question is how to
get them secured on that side to the kennels, which are made of steel
tube 1.5" ID open-ended verticals. If you can come up with a way to do
this quick/easy with recycled materials, so much the better. Thanks in
advance for your advice.

Tom