Use custom runner for CI

.gitlab-ci.yml

@@ -20,6 +20,7 @@ build:
     - triggers
   tags:
     - docker
+    - vtss_site
   before_script:
     - bundle install --deployment --without=development --with=test
     - bundle exec rake init
@@ -36,6 +37,7 @@ deadlinks:
     - triggers
   tags:
     - docker
+    - vtss_site
   before_script:
     - bundle install --deployment --without=development --with=test
   script:
@@ -47,6 +49,7 @@ deploy:
   image: resourcereasoning/website-deploy
   tags:
     - docker
+    - vtss_site
   only:
     - master
   except:
@@ -71,6 +74,7 @@ update_publications:
   image: ignoredambience/github-gitlab-sync
   tags:
     - docker
+    - vtss_site
   only:
     - triggers
   before_script: