Docker has got to be one of the worst energy consumption offenders given it's running on a heavy VM under a non-Linux OS for developers most of the time when people think it's lightweight. Doesn't help on the high performance side either, esp. ML. Might just be the wrong abstraction, and driven by "cloud vendors" for conveniently (for them!) farming overcomitted servers with ill-partitioned mostly-idle vibe "microservices."