Docker image ubuntu 14.04 based with the tools for firmware analysis from firmadyne project. Take a look at https://github.com/firmadyne/firmadyne.
Build from Dockerfile or download it directly from dockerhub (lobobinario/firmadyne).
USE:
Run the image using --privileged option (docker run -it --privileged ...).
Expose ports and create network routes on the host as needed in order to establish connection with the emulated firmware.