WIP: Adding noit docker image

This is the first take at adding a docker image for a container which will build noit.

If you do a `docker build . ` inside the noit directory you will see that noit gets built successfully. 

Few things that I have not been able to figure out:

1: Moving the test cert keys to be used as actual keys is not working
2: Still studying about how I should use the ENTRYPOINT to start noitd
 (or should I be using `docker run /usr/local/sbin/noitd -c /usr/local/etc/noit.conf`)
3: Still not sure about the organization of the file (does it need to be in a separate directory?
should clean up the apt cache repository