Hi I run into this issue multiple times now. Stretch uses a quite old version of docker-compose. It lacks handy new features and is not compatible to newer docker-compose files. It would be great to have docker-compose (and the required python-docker >= 3.2.1) backported from buster. I'm not familiar with packaging for Debian. However I tried to achieve this locally using this [1] guide, but it didn't work for me and the steps to contribute a "formal backport" and getting commit access look very time consuming. It would be great if you could put this on your "wishlist". Thanks, Jonas [1] https://wiki.debian.org/SimpleBackportCreation
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