New singularity deb package creation script

[codecov[bot]]

Codecov Report

Merging #274 (512116b) into master (a5792c2) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #274   +/-   ##
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  Coverage   18.54%   18.54%           
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  Files          20       20           
  Lines        3592     3592           
=======================================
  Hits          666      666           
  Misses       2926     2926           

[sapetnioc]

There are changes not related to singularity packaging in this PR. I think I made something wrong with my final rebase. I need to clean this.

[sapetnioc]

Much better now the branching mess is fixed. I had started the branch from 5.0 by mistake and finally rebased to master; not a good idea.