#13 wrap docker command in script block

Jenkinsfile

@@ -22,6 +22,7 @@ pipeline {
         }
         stage('Run tests on image'){
             steps{
+                script {
                     docker.image("${OWNER}/${IMAGE_NAME}:${TAG}").inside(
                         '--rm --name amarillo -p 8000:80 -e MODULE_NAME=amarillo.app.main -e MAX_WORKERS=1 -e ADMIN_TOKEN=test -e RIDE2GO_TOKEN=test -e METRICS_USER=test -e METRICS_PASSWORD=test -e TZ=Europe/Berlin -v $(pwd)/data:/app/data'
                     ){
@@ -34,6 +35,7 @@ pipeline {
                     }
                 }
             }
+        }
         stage('Push image to container registry') {
             steps {
                 echo 'Pushing image to registry'