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[JammyDodger]

Just to cross-post this here, the problem commit has now been reverted:

Problem with api version when updating docker manager

My apologies everyone, I must have overlooked something as part of my testing for this change. I have reverted it here, that should solve the issue: https://github.com/discourse/docker_manager/commit/e480ca103ce85db1145ab22f3a526e8f356579ce