Currently all branches and versions, even Final releases, use latest image. We should by default use nightly for SNAPSHOT versions. Also the version should be explicitly set using a Maven property so it is clear which version is used without looking at the current code in the extension [1].

[1] https://github.com/kiegroup/kogito-runtimes/blob/f0344455162494cb81525bcadf309b46a0fddf3c/quarkus/extensions/kogito-quarkus-workflow-extension-common/kogito-quarkus-workflow-common-deployment/src/main/java/org/kie/kogito/quarkus/workflow/deployment/AbstractDevServicesProcessor.java#L259-L279