Build a sleshammer image with a kiwi build inside a normal package
build.

Steps to build locally (the default is SLE_12):

  $ make REPOSITORY=SLE_12 buildlocal

If you change the kiwi configuration or the overlay files in the
root directory you need to call

  $ make prepare

in order to update the spec file and repack the overlay files. Do
not forget to commit them in with osc.

For details see the Makefile :)
