OSB-45: invocation not allowed in script

I am starting to hate this.....

LCU/Maintenance/Docker/Jenkinsfile

@@ -44,12 +44,10 @@ pipeline {
                 DOCKER_REGISTRY = "http://nexus.cep4.control.lofar:18080"
             }
             steps {
-                script {
-                    docker.withDockerRegistry(credentialsId: 'nexus', url: 'http://nexus.cep4.control.lofar:18080') {
-                        docker.image("lofar-maintenance-restservice:${DOCKER_TAG}").push()
-                        docker.image("lofar-maintenance-nginxproxy:${DOCKER_TAG}").push()
-                        docker.image("lofar-maintenance-backgroundworkers:${DOCKER_TAG}").push()
-                    }
+                docker.withDockerRegistry(credentialsId: 'nexus', url: 'http://nexus.cep4.control.lofar:18080') {
+                    docker.image("lofar-maintenance-restservice:${DOCKER_TAG}").push()
+                    docker.image("lofar-maintenance-nginxproxy:${DOCKER_TAG}").push()
+                    docker.image("lofar-maintenance-backgroundworkers:${DOCKER_TAG}").push()
                 }
             }
         }