akosiaris added a comment.

  In T265504#6580948 <https://phabricator.wikimedia.org/T265504#6580948>, 
@Zbyszko wrote:
  
  >> Could you elaborate on that a bit?
  >
  > Sure, here goes: We are using Apache Flink[1] as a platform for our event 
processing we do to feed Wikidata Query Service. We've want to move to Flink 
deployment to Kubernetes, hence this ticket. Apache Flink provides it's own 
docker image[2] which, in other circumstances, we would build upon. What 
@Mstyles is doing now is basically replaying work original Flink contributors 
did for their docker image - which, according to our current knowledge is what 
we must do.  
  > The actual docker file (with additional entry script) is here [3] - it 
would be great if we wouldn't need to make sure that we covered everything that 
is handled here with each Flink update.
  
  Yeah, that's not needed. What I proposed, in the meeting back then (and I may 
have failed to communicate it clearly), is to use it as an inspiration to solve 
issues, but not to try and replicate it. That would be a waste of time and 
resources and just wouldn't work, as it is written with a different mindset, 
e.g. the use of gosu doesn't make sense in our environment, we don't use 
EXPOSE, user/group creation is handled by blubber, the docker-entrypoint.sh 
tries to write to what should be an immutable image etc.
  
  > I hope that clears it up, I'm terrible at explaining things via text. If 
you need more context, we could connect over Meet.
  
  Actually that helped up a lot. Thanks for taking the time to explain it, I 
hope my answer helps as well.
  
  > [1] https://flink.apache.org/
  > [2] 
https://ci.apache.org/projects/flink/flink-docs-stable/ops/deployment/docker.html
  > [3] 
https://github.com/apache/flink-docker/tree/master/1.11/scala_2.11-java8-debian

TASK DETAIL
  https://phabricator.wikimedia.org/T265504

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To: Mstyles, akosiaris
Cc: Zbyszko, akosiaris, Ottomata, dcausse, Aklapper, Gehel, Mstyles, 
Alter-paule, Beast1978, CBogen, Un1tY, Akuckartz, Hook696, Kent7301, 
joker88john, CucyNoiD, Nandana, Namenlos314, Gaboe420, Giuliamocci, Cpaulf30, 
Lahi, Gq86, Af420, Bsandipan, Lucas_Werkmeister_WMDE, GoranSMilovanovic, 
QZanden, EBjune, merbst, LawExplorer, Lewizho99, Maathavan, _jensen, 
rosalieper, Scott_WUaS, Jonas, Xmlizer, jkroll, Wikidata-bugs, Jdouglas, aude, 
Tobias1984, Manybubbles, Mbch331
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