Avoid ending up with double quoted variables in docker.

Related to the buggy way docker handles env-files
see https://github.com/docker/cli/issues/3630#issuecomment-2599705392

When you quote variables in your .env (which IHMO is a best practice):

FOO=BAR
FOO1='BAR1'
FOO2="BAR2"

and then you run docker via docker run --env-file .env
you end up with literal quoted variables inside docker:

FOO=BAR
FOO1='BAR1'
FOO2="BAR2"

This is incorrect, and should be fixed in docker.

and in python via python-dotenv, they become double quoted variables

>>> os.getenv("FOO")
'BAR'

>>> os.getenv("FOO1")
"'BAR1'"

>>> os.getenv("FOO2")
'"BAR2"'

As a work-around for the root-cause, could be avoid ending up with double-quoted variables in python?

The issue names no repository file, test, or entry point. Reproduce the quoted .env examples with python-dotenv and compare the resulting values with the expected behavior described in the issue. Confirm the intended handling of single- and double-quoted assignments, then verify the result with an appropriate repository test or documented outcome.