I’d like to add Next.js to CITGM. It uses pnpm to install dependencies, and before its tests can run it needs to be built. See https://github.com/vercel/next.js/blob/canary/contributing/core/developing.md.

Can we add support for pnpm like we do for yarn? And also another flag like build: true that when set runs <npm/yarn/pnpm> run build before running <npn/yarn/pnpm> test?

cc @Ethan-Arrowood