Create Dockerfile

It's a file that will allow lib to run outside of its happy native debian environment, for example, on arch, or in fact... anywhere.  That should actually do it, that single line.  I can make it more complicated if need be, but I think that will work..... wait wait wait, have to do something about the path relativity, so..... I had it clone the repository anyway instead of just using the files that Docker will automatically copy over.  May want to put this in igorpekovnik/docker to maximum cleanliness, but the idea here is that the docker image will be updated each time your repo is.  It should be usable like this:  docker run igorpekovnik/lib ./compile.sh

Dockerfile

@@ -0,0 +1,4 @@
+FROM Ubuntu
+RUN apt-get update
+RUN apt-get install -y git
+RUN git clone https://github.com/igorpecovnik/lib/