Hi @mortond, welcome to the Community!!
Yea, AWS lambda functions only give you write access to a /tmp folder and access to the pwd… Functions are run in a very limited environment. But, yes, you are correct in that you’ll need to use methods that don’t need local access or if you are able to configure where to store your firebase config, you could try moving it to the /tmp folder and see if that helps. Otherwise, you’d need to go with Alternative solution.