Ian Wienand 629fdec768 Build Python 3.9 python-builder/base containers
Python 3.9 is released, so let's build containers.

This splits the docker-images/ files up as they are becoming a bit
crowded.

Change-Id: Id68080575a30e4a08c99df0af603fbb65a0983bd
2021-05-05 09:55:56 +10:00
..
2020-08-14 15:01:01 +10:00
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2020-07-03 07:17:22 +10:00
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