Docker setup for Caldera

[mpboom]

We are interested in supporting/developing Caldera as a native SOARCA capability. For ease-of-use and to allow users to get started with Caldera in a user-friendly manner, we propose to add a profile to the Docker Compose setup that allows the user to run a SOARCA/Caldera setup out of the box (for development purposes).

There should be at least some documentation on how to get started with the combination, and the user should be warned this is not a production-ready setup.

Please see attached PR.