Optimizing Docker Builds with OnBuild

As the Radar Board prepares to integrate Saltstack with their environment using Docker images, they have requested your aid with preparing a parent image for what will eventually become the master node, using OnBuild. Using the Dockerfile included under ~/content-dockerquest-spacebones/salt-example/salt-master/, create a new parent image for the salt-master build named tablesalt:master that executes all commands against docker-entrypoint.sh on any child images created from the parent image. Good luck!

Here is the content-dockerrequest repo: https://github.com/linuxacademy/content-dockerquest-spacebones