oc new-project demo
oc import-image openjdk-11-rhel7 --from=registry.access.redhat.com/openjdk/openjdk-11-rhel7 --confirm -n openshift

git@github.com:snowdrop/spring-boot-http-booster.git && cd spring-boot-http-booster
git checkout sb-2.1.x

oc get is/openjdk-11-rhel7 -n openshift
copy/paste the DOCKER REPO within the xml tags of the pom.xml

<fabric8.generator.from>
        docker-registry.default.svc:5000/openshift/openjdk-11-rhel7
</fabric8.generator.from>

mvn clean package fabric8:deploy -Popenshift

Check pod log

tarting the Java application using /opt/jboss/container/java/run/run-java.sh ...
ERROR Neither $JAVA_MAIN_CLASS nor $JAVA_APP_JAR is set and 0 JARs found in /deployments (1 expected)
INFO exec  java -javaagent:/opt/jboss/container/jolokia/jolokia.jar=config=/opt/jboss/container/jolokia/etc/jolokia.properties -XX:+UseParallelOldGC -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=20 -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -XX:MaxMetaspaceSize=100m -XX:+ExitOnOutOfMemoryError -cp "." -jar   
Error: -jar requires jar file specification
Usage: java [options] <mainclass> [args...]
           (to execute a class)
   or  java [options] -jar <jarfile> [args...]
           (to execute a jar file)
   or  java [options] -m <module>[/<mainclass>] [args...]
       java [options] --module <module>[/<mainclass>] [args...]
           (to execute the main class in a module)
   or  java [options] <sourcefile> [args]
           (to execute a single source-file program)