refactor: Docker-file-simple quickstart

[manusa]

Description

Refactored docker-file-simple (zero-config-dockerfile)

• Renamed to make consistent with rest of docker-file examples
• Removed unnecessary dependencies + tests to speed up build times (quickstarts CI job)
• Added minimum configuration to expose a service
• Made application runnable
• Static file is served from rest endpoint

Type of change

• Bug fix (non-breaking change which fixes an issue)
• Feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing guidelines
• I signed-off my commit with a user that has signed the Eclipse Contributor Agreement
• I Added CHANGELOG entry
• I have implemented unit tests to cover my changes
• I have updated the documentation accordingly
• No new bugs, code smells, etc. in SonarCloud report
• I tested my code in Kubernetes
• I tested my code in OpenShift

[codecov]

Codecov Report

Merging #241 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #241   +/-   ##
=========================================
  Coverage     28.73%   28.73%           
  Complexity     1731     1731           
=========================================
  Files           355      355           
  Lines         18235    18235           
  Branches       2764     2764           
=========================================
  Hits           5240     5240           
  Misses        12377    12377           
  Partials        618      618           

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
0 Code Smells

No Coverage information
No Duplication information

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