Ah, so you're re-creating the results of overlay-mounting the layers? I'm definitely ignorant of the exact rules for those; I only use them to split up large i

Ah, so you're re-creating the results of overlay-mounting the layers? I'm definitely ignorant of the exact rules for those; I only use them to split up large images into a "mostly static" layer (e.g. dependencies, which may be large) and a "subject to change" layer (i.e. our code, which will be different for each version)