I've already started to do this for annoying environments to replicate, such as cross compiling applications. We simply have a master Dockerfile that creates an image that everyone on the team can share.

The cross compile environment can then either be started via a Makefile, or you can run it interactively if you want to use gdbserver or something. Also makes it easy to have a build server compile the binaries on a code push.

I also was hoping for this BUT the security issues with a container system (runs in root and not user space) makes me think there is a better solution. There are a few Linux package management systems that use a folder to install all the libraries inside a application's folder. This would also run in user space and not within root space like containers need to run.