Num Pang Pulled Pork Sandwich

Name: Num Pang Pulled Pork Sandwich
Ingredients: * 8 mini baguette roll, halved and toasted; * carnita (pulled pork), recipe below; * pickled carrot, recipe below; * pickled onion, recipe below; * 2 cucumber, thinly sliced; * spicy mayo, recipe below; * 1 bunch fresh cilantro; for the carnita; * 8-10 pound bone in pork shoulder; * 2 tablespoon canola oil or vegetable oil; * 1 medium onion, chopped; * 3 clove garlic, thinly sliced; * 1 teaspoon chili powder; * 1 teaspoon ancho chile powder; * 1/2 teaspoon cumin; * 2 bay leaf; * kosher salt; for the pickled carrot; * 2 - 3 large carrot, peeled and shredded; * 1/2 cup warm water; * 1/2 cup apple cider vinegar; * ⅛ cup granulated sugar; * 1/2 tablespoon kosher salt; for the pickled onion; * 1 medium red onion, thinly sliced; * 1 cup warm water; * 1 tablespoon sugar; * 1 1/2 teaspoon kosher salt; for the spicy mayo; * 1/2 cup mayonnaise