skip_assets fails with: Unable to find image

[bossie]

Start a build of https://jenkins.vgt.vito.be/job/openEO/job/openeo-integrationtests/ with skip_assets enabled; the "Deploy app on Spark" stage fails with:

Unable to find image 'openeo-docker-ci.artifactory.vgt.vito.be/openeo-yarn:20250807-3947' locally
docker: Error response from daemon: manifest for openeo-docker-ci.artifactory.vgt.vito.be/openeo-yarn:20250807-3947 not found: manifest unknown: The named manifest is not known to the registry.
See 'docker run --help'.