Marie Emmerich has a recipe book that is specifically dairy-free - <strong>here</strong>. She has loads more recipe books, all of which contain dairy-free alternatives within the recipes.
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Also I always have to recommend <strong>Keto Life by Sahiil Makhija</strong> as it's my favourite keto recipe book. He's <strong>Headbanger's Kitchen</strong> on Youtube, and you can check out loads of his recipes on there.
This is the book btw: https://www.amazon.com/Easy-Dairy-Free-Ketogenic-Recipes-Favorites/dp/162860266X