docker: Tweak cargo build verbosities.

docker: Fix unused instructions; format/tabs.

Signed-off-by: Jason Volk <jason@zemos.net>

docker/README.md

@@ -8,9 +8,10 @@ of images from shared intermediate layers with a huge ever-growing pulsating cac
 The result is the ability to run continuous integration for a number of build
 variations while only paying the cost of rebuilding the last layer for each one.
 
+
 ### Layout
 
-This directory is made up of four types of files.
+This directory is made up of three types of files:
 
 - Shell scripts are the user interface. Use this system through one of the shell scripts. The
 bake files can still be docker'ed directly but it's recomended to run the script.
@@ -25,9 +26,6 @@ always be a single unified tree.
 These are written generically in the style of "template functions" with many variables allowing
 many targets to create many variations using the same Dockerfile.
 
-- All other files are various assets that may be referenced or used in a build mount, though
-at the time of this writing I've actually eliminated all of them, more may return one day.
-
 
 ### Getting started