Update file .gitlab-ci.yml

.gitlab-ci.yml

@@ -15,6 +15,14 @@ clear-old-images:
   variables:
     STAGING_BRANCH: "main"
     PRODUCTION_BRANCH: "main"
+  image:
+    name: docker/compose:1.28.0
+    entrypoint: [""]
+  before_script:
+    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    - docker images
+  script:
+    - docker system prune -af
 
 build-app:
   extends: .build_template