feat: docker system prune at cleanup

.gitlab-ci.yml

@@ -513,7 +513,7 @@ benchmarks:physics:
     strategy: depend
   allow_failure: false
 
-cleanup:
+clean:
   stage: finalize
   dependencies:
     - version
@@ -528,3 +528,13 @@ cleanup:
       if [ "$CI_PIPELINE_SOURCE" == "merge_request_event" ]; then
         ./gitlab-ci/cleanup_registry.sh -i jug_xl -r 69 ${NIGHTLY_TAG}
       fi
+    - docker images
+
+deep_clean:
+  stage: finalize
+  dependencies:
+    - clean
+  when: manual
+  script:
+    - docker system prune --force
+    - docker images