Permissions? What's that? -- bower runs as root

- because I said so

.gitlab-ci.yml

@@ -5,7 +5,7 @@ build_css:
         - npm install
         - npm install -g grunt-cli
         - npm install -g bower
-        - bower install
+        - bower install -allow-root
         - apt install ruby
         - gem install sass
     script: