feat(stack): add engine to stack

[DaAnda97]

Description:

I don't want to start the engine in my IDE. It should be part of the stack.

• Add engine to stack
• Update Readme
• Add env variables for tasklist to locker-docker.env

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (f980222) 16.05% compared to head (fccce4d) 16.05%.

Additional details and impacted files

@@            Coverage Diff            @@
##                dev       #1   +/-   ##
=========================================
  Coverage     16.05%   16.05%           
  Complexity      531      531           
=========================================
  Files           521      521           
  Lines          9147     9147           
  Branches        611      611           
=========================================
  Hits           1469     1469           
  Misses         7602     7602           
  Partials         76       76           

Flag	Coverage Δ
unittests	16.05% <ø> (ø)

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