Serverless Stack

I saw the blogpost that PNPM is supported, but `pnpm install` gives command not found.

Anything special I should do?

I added
```check_code_change: pnpm

before_compile:
  - n 14.19.1
  - npm install -g pnpm@6
  - pnpm install```
to seed.yml but still see npm install happening:

```====================
🛠 Compile
====================
$ cd /tmp/seed/source
INFO: Running before_compile hook
$ n 14.19.1
3.82 s
$ npm install -g pnpm@6
1.63 s
$ pnpm install
51.62 s
INFO: Looking for package.json...
$ npm install```