Do not hardcode cmd

[m-czernek]

What does this PR do?

Do not hardcode cmd when starting a new container.

What issues does this PR fix or reference?

Fixes: #2

Previous Behavior

Remove this section if not relevant

New Behavior

Remove this section if not relevant

Merge requirements satisfied?

[NOTICE] Bug fixes or new features require tests.

• Docs
• Changelog - https://salt-extensions.github.io/salt-extension-copier/topics/documenting/changelog.html#procedure
• Tests written/updated

Commits signed with GPG?

Yes/No

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[codecov]

Codecov Report

❌ Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 42.08%. Comparing base (cebd4c0) to head (f010a3e).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/saltext/dockermod/modules/dockermod.py	0.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #20      +/-   ##
==========================================
- Coverage   42.10%   42.08%   -0.03%     
==========================================
  Files          26       26              
  Lines        6545     6549       +4     
  Branches     1138     1140       +2     
==========================================
  Hits         2756     2756              
- Misses       3542     3546       +4     
  Partials      247      247              

Flag	Coverage Δ
Linux	42.06% <0.00%> (-0.03%)	⬇️
project	37.67% <0.00%> (-0.04%)	⬇️
py310	42.02% <0.00%> (-0.03%)	⬇️
py311	42.02% <0.00%> (-0.03%)	⬇️
py314	42.02% <0.00%> (-0.03%)	⬇️
salt_3006_27	42.02% <0.00%> (-0.03%)	⬇️
salt_3008_2	42.02% <0.00%> (-0.03%)	⬇️
tests	50.37% <ø> (ø)

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