Oven Pulled Pork Barbecue

Name: Oven Pulled Pork Barbecue
Ingredients: For the Pulled Pork:; 1 teaspoon salt; 1/2 teaspoon ground black pepper; 1 tablespoon chili powder; 1 teaspoon garlic powder; 1/2 teaspoon onion powder; 1/2 teaspoon ground mustard; 1 (4- to 5-pound) Boston butt roast or pork shoulder (boneless or bone-in); 1 cup apple juice; 4 cloves garlic, coarsely chopped; For the Sauce:; 1 1/2 cups ketchup; 2/3 cup apple cider vinegar; 2 tablespoons Worcestershire sauce; 1/4 cup onion, finely chopped; 2 tablespoons brown sugar, packed; 1/2 teaspoon garlic powder