Support pnpm

[100terres]

Hi 👋 I was wondering if it would be possible to include pnpm in this (or another) node image as package manager. It's already ship with npm and yarn, maybe it could also include pnpm 🙂

• https://pnpm.io/
• https://github.com/pnpm/pnpm

[stephenhmarsh]

I came here to also ask for pnpm to be added! It's already a supported package manager of Node's corepack since 16.13.

I'm currently blocked on using it in CI until I can figure out a way to make the pnpm executable available to my downstream jobs. It really should be part of the container!