add extended hugo build

.gitlab-ci.yml

@@ -0,0 +1,21 @@
+image: registry.gitlab.com/pages/hugo/hugo_extended:latest
+
+variables:
+  GIT_SUBMODULE_STRATEGY: recursive
+
+test:
+  script:
+    - hugo
+  except:
+    variables:
+      - $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+
+pages:
+  script:
+    - hugo
+  artifacts:
+    paths:
+      - public
+  only:
+    variables:
+      - $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH