NPM Install Hanging

A continuation of #849. While the command no longer crashes, it now seems to hang indefinitely on both of my devices. It looks like this is related to something to do with the alpine `edge` repo, rather than `3.12`. Exported rootFS is at the link below, as unfortunately it's too big for GH file upload.

```
npm install --save-dev --exact prettier
```
[rootfs](https://we.tl/t-MFNXJ9veZP)

You can easily reproduce this from scratch by doing the following:

1. Import a new rootfs.
2. Edit `/etc/apk/repositories` to point to `edge` instead of `v3.12`.
3. `apk update && apk upgrade --available`.
4. `apk add npm nodejs`.
5. Run the above command.