GitLab CI Runner: Docker Hub Container images can only be resolved by using the full name of the image. E.g. docker.io/library/node for library images and docker.io/alpine/kubectl for namespaced images. Other formats might have worked in the past. However, this is a bug and will not work in the future. For further information on the security issues connected to shortnames in image urls, see https://man.cx/containers-registries.conf#heading4
