Sprunje Bug fix and Docker updates

[ssnukala]

1. Fixes Sprunje applyTransformations method not returning the $collections object #1068
2. Docker Changes

• Added configurations for Node
• Added reverse-proxy so the docker image is accessible using http://userfrosting.localhost

[codecov]

Codecov Report

Merging #1073 into master will not change coverage by %.
The diff coverage is 33.33%.

@@            Coverage Diff            @@
##             master    #1073   +/-   ##
=========================================
  Coverage     67.57%   67.57%           
  Complexity     1976     1976           
=========================================
  Files           170      170           
  Lines          6917     6917           
=========================================
  Hits           4674     4674           
  Misses         2243     2243           

Impacted Files	Coverage Δ	Complexity Δ
app/sprinkles/core/src/Sprunje/Sprunje.php	55.94% <33.33%> (ø)	47.00 <0.00> (ø)

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[lcharette]

Could you split this PR in two? Sprunje fix can be merged, but not so sure about Docker, it needs more approval. Thanks !

[Silic0nS0ldier]

Docker I would do in a separate PR. Docker change could break peoples workflows, a closer inspection is needed which would hold up the Sprunje fix.

[ssnukala]

Ok I will split it, I should have done this separately in the first place - sorry