Describe the bug
For the past couple of days, I haven't been able to run wp-env on my Linux box.

To reproduce
On Linux, in your Gutenberg source directory, run npx wp-env start. It'll fail with the following error:

✖ .IOError: [Errno 13] Permission denied: '~/.wp-env/6ac6b03bd54e5e922f0d180f6d7ff25d/docker-compose.yml'

(I got the same error with npm -g i @wordpress/env && wp-env start.)

Desktop (please complete the following information):

• OS: Linux (Ubuntu 18.04.3 LTS)

Additional context
This might correlate with #20002 being merged, but I'm not sure it's caused by that PR. /cc @noisysocks

Can we harden Gutenberg against issues like this? For the past ten days, of the time I spent working on Gutenberg, an estimated 50% went into trying to get it to run, figuring out that docs were outdated, updating them, and, just as I thought that things were running smoothely, getting stuck again with this new issue. That doesn't feel like a good use of my time 🙁