Fix default repository file path

I have adjusted how the default repository YAML file is found. I needed
to add the expand path method to get the directory of the Ruby script.

Signed-off-by: Konrad Reiche <konrad.reiche@gmail.com>
Stop indexing the datasets when archiving

The indexing is not performed when the archiving option has been chosen.

Signed-off-by: Konrad Reiche <konrad.reiche@gmail.com>