Tweaks to Dockerfile tutorial
Made a few tweaks to Dockerfile tutorial links and removed some cruft from the tutorial itself.
Docker-DCO-1.1-Signed-off-by: Fred Lifton (github: fredlf)
@@ -14,7 +14,8 @@ successively.
This page discusses the specifics of all the instructions you can use in your
`Dockerfile`. To further help you write a clear, readable, maintainable
`Dockerfile`, we've also written a [`Dockerfile` Best Practices
-guide](/articles/dockerfile_best-practices).
+guide](/articles/dockerfile_best-practices). Lastly, you can test your
+Dockerfile knowledge with the [Dockerfile tutorial](/userguide/level1).
## Usage
