potiuk edited a comment on pull request #20238:
URL: https://github.com/apache/airflow/pull/20238#issuecomment-992619940


   This is one of the final optimizations/refactorings and cleanups of the 
image before I will submit it to become an official image. Some last 
optimizations/clarifications (cleaning up the stderr output etc. )
   
   If you think it is to big I can attempt to split it into smaller pieces, but 
there are a number of changes in there that invalidate current layers of 
Airflow images, making the cache less effective and merging it in one go would 
only require image refresh once. 
   
   Since the image is going to be "official" I had to make sure that all the 
potential "errors" are either gone or are explained. There re many requirements 
to fulfill to become an "official image" - and I think with that one, we are 
getting closer to having them all fulfilled 
(https://github.com/docker-library/official-images). 
   
   One thing that I had to do however is to add this reassuring message that we 
know what we are doing by using root and not using virtualenv. I tried to solve 
the problem in PIP or even PEP 668 level but I failed, so I had to revert to 
this reassuring message:
   
   ![Screenshot from 2021-12-13 
16-55-29](https://user-images.githubusercontent.com/595491/145844895-96088d89-9778-4158-9c16-416b3ebaec06.png)
   
   Looking forward to reviews!
   


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