Southwestern Pulled Pork with Pineapple

Name: Southwestern Pulled Pork with Pineapple
Ingredients: 2 tablespoons brown sugar packed; 2 teaspoons mild chili powder; 2 teaspoons ground cumin; 2 teaspoons dried thyme; 1 teaspoon Kosher salt; 1 teaspoon freshly ground black pepper; 3 pound pork butt or shoulder lightly trimmed; 2 tablespoons oil; 3 cloves garlic minced; 2 medium white onions diced; 1 5.5 ounce can tomato paste; 3 tablespoons apple cider vinegar; 1/2 teaspoon hot sauce or more, to taste; 1 14 ounce can crushed pineapple, un-drained; 1/4 cup fresh cilantro chopped; Hamburger buns or taco shells warmed, for serving