stage('Deploy Dev') {
            environment {
                DEPLOY_TO = 'dev'
            }
            when {
                branch 'master'
            }
            steps {
                echo "deploying release from artifactory into ${env.DEPLOY_TO}"
                // Fetch from Artifactory.
                script {
                  def downloadSpec = """{
                    "files": [
                      {
                        "pattern": "repo-sbt-snapshots/uk/org/${projectName}/${BUILD_NUMBER}/*.jar",
                        "target": "dist"
                      }
                    ]
                  }"""
                  server.download downloadSpec
                }
                // deploy
            }
        }

Successfully downloaded 'http://hostname/artifactory/repo-sbt-snapshots/uk/org/sbr-ci-poc/49/ci-poc_2.11-0.2.49.jar' to '/var/lib/jenkins/workspace/er_GitLab_sbr-ci-poc_master-TKMSAR453MMTFPKYYB5VLQTLHZ4ZY6OK4UZKJVMB63Z6WTPG5XZQ/dist/uk/org/sbr-ci-poc/49/'