Is there a way how, within a CI, to trigger a build of docker images whose dependencies have changed? I mean - I would like my CI to build an image if Python sources that are going to be copied into it (as a PEX file) or a Dockerfile were changed. Something like

./pants --changed-since=origin/master --changed-dependees=transitive test

but for building images 🙂

You're almost there! Instead of

test

use

build

. And then you also need a

--filter-target-type=docker_image

and I think that ought to do it!

Ok, that was easier than expected, thanks for the hint 😄 It seems that

./pants --filter-target-type=docker_image --changed-since=origin/master --changed-dependees=transitive package

works...

yay! that's new to 2.13 that you can use

--filter

from anywhere, that makes me happy

FWIW those are "global" flags, so valid for almost every goal.