enable delete image

Jenkinsfile

@@ -97,7 +97,7 @@ pipeline {
     always {
       echo "CleaningUp work diretory"
       deleteDir()
-//      sh "docker image rm -f `docker image ls -q ${DOCKER_REGISTRY}/${DOCKER_IMAGE}:${repo}-${BUILD_NUMBER}`"
+      sh "docker image rm -f `docker image ls -q ${DOCKER_REGISTRY}/${DOCKER_IMAGE}:${repo}-${BUILD_NUMBER}`"
     }
     failure {
       mail charset: 'UTF-8',