Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -10,8 +10,18 @@
 image: "${CI_TEMPLATE_REGISTRY_HOST}/pages/hugo:0.111.3"
 
 variables:
+  HUGO_ENV: production
   GIT_SUBMODULE_STRATEGY: recursive
 
+# ATTENTION #
+# From Hugo version 0.111.3 and onwards, the base image was switched
+# from Alpine to Debian, see https://gitlab.com/pages/hugo/-/merge_requests/175.
+default:
+  before_script:
+    - apk add --no-cache go curl bash nodejs
+    - hugo mod init gitlab.com/pages/hugo
+    - hugo mod get -u github.com/theNewDynamic/gohugo-theme-ananke
+
 test:
   script:
     - hugo