added chapter 1 outline

Author: bastihaase

chapter1/README.md

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+# First Docker Container!
+
+Let us get started with the "Hello World!" of Docker. In this directory, take a closer look at the Dockerfile. This is where we specify what our container will look like.
+
+Describe Dockerfile in more detail.
+
+Instructions on how to run the container.
+Instructions on how to investiage what is going on.
+Introduction of docker exec and stuff.