CI: Now only executing on main branch

.gitlab-ci.yml

@@ -11,6 +11,8 @@ pages:
         - cp -R ./assets ./public/assets
         - npm i
         - npx tailwindcss -i ./index.pre.css -o ./public/index.css
+    rules:
+        - if: $CI_COMMIT_BRANCH == "main"
     artifacts:
         paths:
             - public/