feat: package gdu in docker container

[rare-magma]

Containerizing gdu makes it easier to use without installing it.
Please note that I haven't tested the commands in the makefile, only executed them manually in the terminal

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (efa7e46) 90.16% compared to head (64db7af) 90.13%.

❗ Current head 64db7af differs from pull request most recent head 9832a7a. Consider uploading reports for the commit 9832a7a to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #313      +/-   ##
==========================================
- Coverage   90.16%   90.13%   -0.03%     
==========================================
  Files          31       31              
  Lines        3345     3345              
==========================================
- Hits         3016     3015       -1     
- Misses        267      268       +1     
  Partials       62       62              

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[dundee]

Nice contribution, thank you!

[rare-magma]

@dundee thanks for accepting the PR and creating the automated workflow. Do you think it would make sense to add the packages section in the repo homepage so it's easy to see it?

example:

[dundee]

Good point! Added.