Resolve "Command "require-dev" is not defined."

Closes #25 (closed)

.gitlab-ci.yml

@@ -18,6 +18,8 @@ Build:
     when: always
     paths:
       - site/
+  only:
+    - master
 
 Deploy:
   stage: deploy
@@ -28,3 +30,5 @@ Deploy:
   script:
     - a -m synchronize -a "src=${PWD}/site/ dest=/var/www/docs/devops-tools" --limit=bsdevop1
   cache: {}
+  only:
+    - master