remove build dir in snippet and in our CI

.gitlab-ci.yml

@@ -117,6 +117,7 @@ deploy_zenodo:
     - build_docker
   before_script:
     - apt update && apt-get install git -y
+    - git clean -f
     - pip install .
     - python eossr/scripts/update_codemeta_eossr.py -c codemeta.json
     - eossr-check-connection-zenodo --token $ZENODO_TOKEN -p $CI_PROJECT_DIR

examples/CI_code_snippets/3.ex_CI_upload_ossr.md

@@ -43,7 +43,6 @@ deploy_zenodo:
 
 ```
 
-
 ### Upload to Sandbox Zenodo
 ```yaml
 stages:
@@ -59,3 +58,7 @@ deploy_zenodo:
   only:
     - tags
 ```
+
+Note: you might want to restore the directory to its tag stage if you made changes in previous CI stages
+(for example removing build subdirs from previous test stages).
+You may do so using `- git clean -f` in the `before_script` section.