Shredded Pork and Pineapple Tacos

Name: Shredded Pork and Pineapple Tacos
Ingredients: One 15-ounce can tomato sauce; 3 tablespoons chili powder; 3 tablespoons light brown sugar; 2 teaspoons ground coriander; 1 teaspoon ground cumin; One 3-pound pork shoulder (or butt), trimmed of excess fat; Kosher salt and freshly cracked black pepper; 5 cloves garlic, minced or grated; 2 yellow onions, diced; 1/4 cup fresh lime juice; 1/3 cup lime juice; 1/3 cup sugar; 1/3 cup red wine vinegar; 1 jalapeno, seeded and sliced; 1/2 medium red onion, thinly sliced (about 3/4 cup); Sixteen 6-inch corn tortillas, warmed; 2 cups 1/2-inch diced fresh pineapple; Fresh cilantro sprigs, for serving; Shredded red cabbage, for serving; Cotija cheese, for serving; Lime wedges, for serving; Kosher salt; Guacamole, for serving, optional; Pico de gallo, for serving, optional