I don't know much about deployment. In terms of version control, we use git. I find it a bit tricky though as there's a git repo inside the Pharo image, and then there's the file based git repo and they need to be kept in sync. I've gotten used to that though, but it's not ideal.

Every developer has their own image. It's easy to set up an image (though I always need to check the company docs on how to exactly do it), but then you download your own image. These images can be different from each other as well, as only the code checked in to git is the same.