Avoid zypper errors when using singe-instance container

[Martchus]

• Make sure the single-instance container has all packages the boostrap script will install so it is less likely to run into errors
• See https://progress.opensuse.org/issues/165399

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.72%. Comparing base (d0b91cb) to head (8f00f04).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5899   +/-   ##
=======================================
  Coverage   98.71%   98.72%           
=======================================
  Files         394      394           
  Lines       38657    38657           
=======================================
+ Hits        38162    38165    +3     
+ Misses        495      492    -3     

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