The Easiest Crockpot Pulled Pork

Name: The Easiest Crockpot Pulled Pork
Ingredients: 1 boneless pork shoulder roast, fat removed, 3.5 lbs/1.75 kg or so; 4 ml (3/4 tsp) salt; 4 ml (3/4 tsp) pepper; 15 ml (1 tbsp) vegetable oil; 2 diced onions; 4 garlic cloves, minced; 30 ml (2 tbsp) chili powder; 10 ml (2 tsp) ground coriander; 2 bay leaves; 60 ml (1/4 cup) tomato paste; 1 can tomato sauce (14 oz/398 ml); 30 ml (2 tbsp) brown sugar, tightly packed; 30 ml (2 tbsp) cider vinegar; 30 ml (2 tbsp) Worcestershire sauce; 2 green onions, sliced