add documentation for setting network interfaces to be used with openmpi

[hndgzkn]

Open MPI hangs if network interfaces are not set correctly.

This happens when there are virtual network interfaces which could not actually be used to communicate with MPI processes, eg docker bridge networks.

[codecov[bot]]

Codecov Report

Merging #25 (3c0ebdd) into main (d778df4) will decrease coverage by 0.02%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main      #25      +/-   ##
==========================================
- Coverage   74.18%   74.15%   -0.03%     
==========================================
  Files          41       41              
  Lines        2572     2573       +1     
==========================================
  Hits         1908     1908              
- Misses        664      665       +1     

Flag	Coverage Δ
unittests	74.15% <ø> (-0.03%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
dicodile/data/text.py	0.00% <0.00%> (ø)
dicodile/data/tests/test_home.py
dicodile/data/home.py
dicodile/tests/test_config.py	100.00% <0.00%> (ø)
dicodile/config.py	100.00% <0.00%> (ø)

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[tomMoral]

MErging, thx @hndgzkn !