Replace use of redisfab/stunnel with a Dockerfile

[ahmedsobeh]

…ker-compose to reflect it

Pull Request check-list

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• Do tests and lints pass with this change?
• Do the CI tests pass with this change (enable it first in your forked repo and wait for the github action build to finish)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Is there an example added to the examples folder (if applicable)?

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Description of change

This PR adds a docker file to replace use of redisfab/stunnel with our own dockerfile.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 75.01%. Comparing base (0109139) to head (4108a39).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #56   +/-   ##
=======================================
  Coverage   75.01%   75.01%           
=======================================
  Files         132      132           
  Lines       34367    34367           
=======================================
  Hits        25782    25782           
  Misses       8585     8585           

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