- use bash-static and avoid dragging in all of debian-base
- use distroless as the base image
- the shell script needs a `cp` utility, add a go based one for just
files (no support for directories!)
- Rework the calls to `mv` and recursive `cp` in the code
- we don't need to support windows in this container image
- the test case was slightly off as it was assuming that the old
directory was copied into the new directory, but the desired
functionality is that all files in the old directory should be in the
new directory.
Signed-off-by: Davanum Srinivas <davanum@gmail.com>
