Make sure artifacts are never empty

Author: codablock

.gitlab-ci.yml

@@ -97,8 +97,11 @@ stages:
     # stay minimal for PRs and branches (we never need them)
     - |
       mkdir $CI_PROJECT_DIR/cache-artifact
+      mkdir -p $CI_PROJECT_DIR/testlogs
       if [ "$CI_COMMIT_REF_SLUG" = "develop" ]; then
         cp -ra $CACHE_DIR/* $CI_PROJECT_DIR/cache-artifact/
+      else
+        touch $CI_PROJECT_DIR/cache-artifact/.empty
       fi
 
   # We're actually only interested in the develop branch creating the cache artifact, but there is no way to control this