ci updated

.gitlab-ci.yml

@@ -18,6 +18,13 @@ pages:
   - echo "</pre></body></html>" >> index.html
   artifacts:
     paths:
-    - public
+      - public
+    expire_in: 1 week
   only:
-  - master
+    refs:
+      - master
+    changes:
+      - .gitlab-ci.yml
+      - README.md
+      - data/*
+      - schema.txt