is it safe to prune docker images?

[luxiouronimo]

it seems i've been running newsblur docker for almost 2 years; while doing some system maintenance i saw several 'Unused' and 'Unused (dangling)' docker images..

i also discovered the docker system prune -a command, and wonder if it's safe to run, or if there's some method of clearing out the old stuff..

[luxiouronimo]

it seems safe to run a docker image prune to remove dangling images, i'm not sure about docker image prune -a tho

[samuelclay]

Yep, it's great to get rid of the older images, esp. if you've been upgrading regularly.

[luxiouronimo]

awesome, thanks!