Disk space usage of /lib/docker is high

[angus (Angus McLeod)]

I encountered a similar issue; perhaps the same, it’s hard to tell. This is what fixed it (after a fashion) for me:

Docker disk usage issue c. Sept 1 2017

If you do a fresh install, as I did recently for my sandbox, you may, despite all the improvements in the cleanup scripts and docker itself, still encounter the dreaded disk usage creep issue; i.e. after rebuilding a number of times you see your disk usage go steadily upwards until the instance is no longer usable. This issue has had a number of iterations (hence ‘circa Sept 1 2017’). The current iteration seems to be un-removed aufs/diff files. Specifically, after a fresh Discourse install on…