ci: Build web site.

.gitlab-ci.yml

@@ -0,0 +1,25 @@
+image: debian:buster-slim
+before_script:
+  - apt update -qq
+
+stages:
+  - build
+  - deploy
+
+build_job:
+  stage: build
+  script:
+    - DEBIAN_FRONTEND=noninteractive apt install --no-install-recommends -y -qq -o=Dpkg::Use-Pty=0 make hugo
+    - make
+  artifacts:
+    paths:
+      - public
+  variables:
+    GIT_SUBMODULE_STRATEGY: normal
+
+deploy_job:
+  stage: deploy
+  script:
+    - /bin/false # not implemented
+  only:
+    - master