Just a Dockerfile to create a CentOS 7 image with all packages needed to build Broadcom wireless kernel modules, as described in the CentOS Wiki.
The current docker image will be build automatically by Docker hub and is available here
To build the image manually just call:
sudo docker build -t thomo/centos7-dev:3.10.0-229.14.1.el7 .
Here is a shell script which use the container to build the kernel module.