Help!!!??? Training a puppy?

I have just got this doberman/pitbul mix puppy and its the sweetest thing in the world. Its about 1 1/2 months and she is very playful. We live in Arizona, and I am trying to teach the puppy to sleep outside of our home. When i talk about sleeping outside of out home I mean in an enclosed enviorment. Our house is located on a mountain top, preety big too, and around the house is like a hallway that goes all the way around. We go out of the door of the house and then we are in the hallway, to get outside we have to go through another door. The hallway also has a doggy door that the puppy already knows how to use, but my question is how can I get her to sleep out in the hallway, and to do her busines outside. When I put her outside she just whines and whines for 5 minutes and then goes to her bed. I have set up a home like enviorment in the hall, as well as a dog house with warm pillows, and a heat lamp to provide heat. She has been able to sleep one night alone in the hall, and was fine with it, but recently she does not want to sleep there, even though its a very warm place. When we take her inside the house she just chews on things and takes things off the christmas tree. If left unattended she goes to the bathroom in the house on carpets. That is one of the major reasons we would like for her to sleep outside. What I am most afraid of is that if my family and I dont train this puppy to listen to us, then we are afraid if hes going to be a bad dog when hes older, because everyone keeps saying pitbulls and dobermans are bad dogs. When she whines i take her inside the house and hold her that is when she falls asleep, but I am noticing that if I keep giving her attention she keeps whining at the house door, until someone comes out. With that being said please advise me on how to train my puppy to listen to me, to sleep outside, and to do their business outside. Also the temperature outside is about 40 degrees at night, but in the hallway its warm, and the bed is warm. She does like sleeping there during the day, but doesnt like it during the night. Its not completely dark, as there is a lamp, and it illuminates almost the whole hallway. Please help me, I dont want to have to give this dog away. I have had bigger dogs before like a German Shepard, but the only thing is that the German Shepard came trained when we hot him. The puppy is a girl also. Please help:) Will pick best answer.