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    Also don’t forget to actually check the contents of your docker folder in /var/lib/ - I had wondered where all my space went but apparently I had upgraded/changed the distribution of the docker engine (still apt) to a different package (remember docker vs dockerio vs docker-engine or whatever) and docker prune was ofc only purging the current stuff, not the old files.

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      That last command docker system prune --all --force --volumes freed ~40GBs for me, nice 👍