[CI] Add forgotten .txt

.gitlab-ci.yml

@@ -139,7 +139,7 @@ docker-bench-security:
     - docker-compose up -d
     - git clone https://github.com/docker/docker-bench-security.git
     - cd docker-bench-security
-    - sh docker-bench-security.sh -c container_images,container_runtime,docker_security_operations,community_checks -l ../../report.
+    - sh docker-bench-security.sh -c container_images,container_runtime,docker_security_operations,community_checks -l ../../report.txt
   after_script:
     - docker logout $REGISTRY
   artifacts: