anchor.diff: += `layers.py`
  +
  +Simple script to show all the layers of which the image is built.
  +
  +== Usage
   ----
   $ python layers.py -h
   usage: layers.py [-h] [-c] [-d] [-m] layer
  
positive.code:            └─ b621dc5d4989677e62bf8ee0316f557156b5cba2b551e8bbb6368fb5920ae3aa [/bin/sh -c #(nop) CMD [/bin/sh -c /opt/torquebox-$TORQUEBOX_VERSION/jboss/bin/standalone.sh -b 0.0.0.0]]
  ----
  
  Machine parseable output:
  
  ----
  $ python layers.py jboss/torquebox -c -m
  
negative.code:   -m, --machine     Machine parseable output
  ----
  
  == Examples
  
  === Default output
  
  ----
  $ python layers.py jboss/torquebox   
  