diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 35cf24d..892a323 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -40,3 +40,5 @@ build-image:
     - sleep 5
     - bluebuild build -vv -B docker -p ./recipes/*.yml
     # - bluebuild build -vv -B docker -p ./recipes/$RECIPE
+  after_script:
+    - docker system prune -f