ci: added Gitlab CI

.gitignore

@@ -1,3 +1,7 @@
 node_modules/
 *.epub
+*.mobi
 *.pdf
+*.docx
+*~
+

.gitlab-ci.yml

@@ -0,0 +1,37 @@
+image: dmoonfire/mfgames-writing-js:2.0.0
+
+stages:
+    - publish
+
+publish:
+    stage: publish
+    only: [master]
+    tags: [docker]
+    script:
+        # Install the basic requirements including the free fonts.
+        - npm ci
+
+        # Verify that the commits are good.
+        - npx commitlint --from=$CI_BUILD_BEFORE_SHA
+
+        # We need the cover from the general repository.
+        - mkdir -p build/repos
+        - git clone https://oauth2:$fedranAccessKey@gitlab.com/fedran/fedran-covers.git build/repos/fedran-covers
+
+        # Trigger the release if needed.
+        - npx semantic-release
+
+	# Build the files.
+        - npm run build
+
+        # Trigger the Fedran website to rebuild.
+        - "curl -X POST -F token=$fedranAccessKey -F ref=master https://gitlab.com/api/v4/projects/4027285/trigger/pipeline"
+
+    artifacts:
+        expire_in: 1 week
+        paths:
+            - "*.pdf"
+            - "*.epub"
+            - "*.mobi"
+            - "*.docx"
+            - "*.html"