Added "docker outside of docker" devcontainer

[hellt]

This PR takes the devcontainer machiner to another level.

Besides the standard docker in docker (dind) variant I have added the "docker outside of docker (aka dood)" which uses the parent docker without penalties of the docker in docker.

Besides, both dind and dood variants also got -slim versions which do not have go deps and py deps installed.
There is still a lot of work to slimify them, since the base py3.11 image from msft is heavy by itself. Maybe this is for later

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 51.35%. Comparing base (2269834) to head (21c0860).
Report is 5 commits behind head on main.

Additional details and impacted files

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  Coverage   51.35%   51.35%           
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  Files         172      172           
  Lines       16830    16830           
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  Hits         8643     8643           
  Misses       7262     7262           
  Partials      925      925