Adding vim to the image so that nano is not the only editor available

[cyberops7]

Adding vim to the image would make working inside the containers more comfortable for many people. I am not used to nano, so I find myself choosing to apt update then apt install vim any time I need to work on any files inside my containers based on this image. I can't imagine that I am the only one that would prefer to use vim over nano, so this will make the image more inclusive.

[cyberops7]

Redundant now with #42. I'll close this PR if that one gets merged.