#18004 Docker build args dependency inference happens too early Issue created by tobni Describe the bug To reference images in the FROM clause of Dockerfiles, following snippet can be used.

ARG SOME_IMAGE="path/to/some-image:target"
FROM $SOME_IMAGE

which will prompt pants to build the image for the

docker_image

target

path/to/some-image:target

and use it. If

./pants package <target> --docker-build-args="SOME_IMAGE=<reference-to-e.g docker-hub>

is passed, the ARG is correctly replaced when building the snippet docker image. However, pants will still first build

path/to/some-image:target

, even though it will not be used. Pants version 2.13.0 OS Ubuntu 22.04 Additional info Link to slack chat about this behaviour being a bug. pantsbuild/pants

#18004 Docker build args dependency inference happens too early Issue closed as completed by kaos pantsbuild/pants