Add docker-compose usage

[jedie]

No description provided.

[codecov]

Codecov Report

Merging #7 into master will decrease coverage by 0.00%.
The diff coverage is 75.00%.

@@            Coverage Diff             @@
##           master       #7      +/-   ##
==========================================
- Coverage   67.18%   67.18%   -0.01%     
==========================================
  Files          27       27              
  Lines         451      454       +3     
==========================================
+ Hits          303      305       +2     
- Misses        148      149       +1     

Impacted Files	Coverage Δ
inventory_project/settings.py	87.93% <75.00%> (-1.16%)	⬇️

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