Slow-Cooked Moroccan Lamb Tagine with Apricots and Almonds

1 kg lamb shoulder, cut into cubes

2 tbsp olive oil

2 onions, finely chopped

3 garlic cloves, minced

1 tsp ground cumin

1 tsp ground cinnamon

1 tsp ground ginger

1/2 tsp ground turmeric

1/2 tsp ground black pepper

200g dried apricots