Bind-mount directories outside home for Docker

[mgax]

It seems that it's not possible to bind-mount a directory outside of the current user's home folder:

ufo:~:% ls /opt/homebrew                                                 
bin       CHANGELOG.md     Dockerfile  Frameworks  Library      opt        sbin
Caskroom  completions      docs        include     LICENSE.txt  package    share
Cellar    CONTRIBUTING.md  etc         lib         manpages     README.md  var
ufo:~:% docker run --rm -v /opt/homebrew:/homebrew alpine ls -a /homebrew
.
..

---

In Docker Desktop, it's possible to whitelist paths, in addition to the home directory, which can be used to bind-mount volumes inside containers.

[kdrag0n]

/opt/homebrew has been added for the next version. In the meantime, you can use /mnt/mac/opt/homebrew instead.

Subscribe to #435 for updates on the general case.