Update .gitlab-ci.yml

.gitlab-ci.yml

 stage: deploy
 script:
-- mkdir .public
-- cp -r * .public
-- mv .public public
-artifacts:
-  paths:
-  - public
-only:
-  - master
-    
\ No newline at end of file
+  - mkdir .public
+  - cp -r * .public
+  - mv .public public