Fetch Singularity image list for deploy.

.gitlab-ci.yml

@@ -30,6 +30,7 @@ deploy:
   tags:
     - docs-test
   script:
+    - curl -L https://raw.githubusercontent.com/unlhcc/singularity-dockerfiles/master/IMAGELIST.md > static/markdown/singularity-images.md
     - hugo --ignoreCache -b ${BASE_URL} -v
     - pandoc -s content/facilities.md -o public/facilities.docx
     - rsync -avz --delete public/ $DEPLOY_ROOT