Add pdf creation

.gitlab-ci.yml

@@ -20,6 +20,20 @@ test:
   except:
     - main
 
+pdf:
+  stage: build
+  before_script:
+    - mkdir pdfs
+  script:
+    - gitbook pdf . pdfs/${CI_PROJECT_NAME}.pdf # pdf build
+  artifacts:
+    paths:
+      - pdfs/${CI_PROJECT_NAME}.pdf
+    expire_in: 1 day
+  only:
+    - master # this job will affect only the 'master' branch
+
+    
 # the 'pages' job will deploy and build your site to the 'public' path
 pages:
   stage: deploy