Dockerfile enhancement

[satk0]

Resolves #253

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (984c1ee) 99.61% compared to head (54e1400) 100.00%.
Report is 7 commits behind head on master.

❗ Current head 54e1400 differs from pull request most recent head d8b5c9c. Consider uploading reports for the commit d8b5c9c to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           master      #256      +/-   ##
===========================================
+ Coverage   99.61%   100.00%   +0.38%     
===========================================
  Files          14        14              
  Lines         774       580     -194     
===========================================
- Hits          771       580     -191     
+ Misses          2         0       -2     
+ Partials        1         0       -1     

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