The manual job build [1] pushed successfully the softwareheritage/maven-index-exporter [2]
(build, push, clean).

The remaining limitation is about the account to configure in jenkins.

We are currently using vsellier's api token... (part of the softwareheritage organization in dockerhub).
We only have 3 seats in that orga, so we do not have a real place for a bot account for now.

[1] https://jenkins.softwareheritage.org/job/wip-maven-indexer-exporter/

[2] https://hub.docker.com/repository/docker/softwareheritage/maven-index-exporter/tags?page=1&ordering=last_updated

Related to T4105

tox

And manual install [1].