Build failures with buildx due forced push attempts

[duncdrum]

Description

with the following Dockerfile

FROM gcr.io/distroless/java17:latest
...

we are pulling the base image for our build from googles container registry. The final image should then be pushed to docker's container registry.

However the dmp plugin fails our builds, with the following message.

[INFO] DOCKER> ERROR: failed to solve: failed to push gcr.io/existdb/...

Setting the <pushRegistry> works. So images are pushed to docker.io, but our CI consistently fails because of the attempted push to google container registry. We do not want to push to gcr.

I have tried multiple variation of specifying <pullRegistry> or separating the docker:build and docker:push steps. But dmp insists on attempting an unwanted push to gcr.

How can we suppress this attempt? Previous versions of dmp did not have this behaviour.

Info

• docker-maven-plugin version : 0.45.1
• Maven version (mvn -v) : 3.9.9

• Docker version : 27.2.0
• If it's a bug, how to reproduce :
• Sample project : https://github.com/eXist-db/exist