Add the option to not automatically --rm docker images and auto pull on every nebula app change about worker HOT 2 CLOSED

the new /prune option added will provide option to clean unused images so all hat remains of this is to have an option not to set force_pull = False in the app config

from worker.

rethinking about it made me realize that having a no pull option might lead to risky usages (what if someone cleans some of the devices of images between run but not all of them? what if someone pushes a new version over the same tag?) and it is a lot safer to always repull images, seeing how if the image layer is already in the drive it doesn't really forces downloading all over it again the time it takes for the extra pull is already minimal and with the new /prune endpoint there shouldn't be much worries about disk space anyway.

from worker.