Speeding up build times by caching assets

Hey mjgs! welcome to netlify. Yes, there is a gatsby plugin you can try - (if you need support with that, please post in #Netlify-support:build-plugins)

But first, here is a stack of information about caching - you shouldn’t have to do a fresh install every time, really. We defininitely cache dependencies between subsequent builds (unless something is configured differently than it should be)
maybe these are helpful: