Update .gitlab-ci.yml

.gitlab-ci.yml

@@ -5,7 +5,7 @@ stages:
 build:
    stage: build
    script:
-    - if [ "$CI_COMMIT_REF_NAME" == "master" ]; then cp -R dist/* /var/www/html/index.html; fi
+    - if [ "$CI_COMMIT_REF_NAME" == "master" ]; then cp dist/index.html /var/www/html/index.html; fi
 
 test:
    stage: test