not sure if this is complete, but it works now.
# please double check - might not be complete yet.
tdnf install -y openjdk8
curl -J -L -O https://github.com/GoogleContainerTools/jib/archive/refs/tags/v3.2.0-maven.tar.gz
tar -xzvf jib-3.2.0-maven.tar.gz
cd jib-3.2.0-maven
./gradlew jib-cli:installDist
cp ./jib-cli/build/install/jib/bin/jib /usr/bin
Afterwards, I've copied all the files (main.go, Dockerfile, deployment.yaml, etc.) from the previous 'building-applications-for-kubernetes chapter into a new directory myapp, and started there skaffold init --generate-manifests.