Zsh docker images

[Julien Nicoulaud <julien.nicoulaud@xxxxxxxxx>]

Hi all,

I just wanted to advertise a small project that could be useful to other
zsh users: https://github.com/zsh-users/zsh-docker

This builds images of many versions of zsh (including a daily build of
zsh's master branch) and deploys them to Docker Hub (
https://hub.docker.com/u/zshusers).

So you can do, for instance:

    $ docker run -it zshusers/zsh-5.3.1

-> will launch an interactive session of zsh 5.3.1

We use it to automatically test zsh-syntax-highlighting on all supported
versions of zsh.

Cheers,
Julien