Discussion: Make Dockerfile editable and live in root

[toddw]

Up until now we have had gluestick dockerize look to src/config/.Dockerfile. It is a hidden file that requests you do not modify it. The reason for this was mostly because we wanted the ability to update the first line to automatically use the latest version of GlueStick.

However, it seems like we could just as easily let the file be public and live at /DockerFile and just leave a not that we will replace that top line automatically. This would allow tools like now.sh to work much better with GlueStick.