Support a main branch Antora UI preview build

Author: mlr

.github/workflows/deploy-bundle-preview.yml

@@ -1,6 +1,9 @@
 name: Deploy Bundle Preview
 
 on:
+  push:
+    branches:
+      - 'main'
   pull_request:
     branches:
       - '*'
@@ -30,7 +33,7 @@ jobs:
         shell: bash
         run: |
           # transform branch names in form of `refs/heads/main` to `main`
-          draft_branch=$(basename ${{ github.event.pull_request.head.ref }})
+          draft_branch=$(basename ${{ github.event.pull_request.head.ref || github.event.ref }})
           echo "draft_branch=$draft_branch" >> $GITHUB_OUTPUT
         id: extract_branch
 

README.adoc

@@ -18,7 +18,7 @@ ifdef::env-github[]
 endif::[]
 // Project URLs:
 :url-project: https://github.com/riptano/docs-ui
-:url-preview: https://riptano.github.io/datastax-docs-site/main
+:url-preview: https://riptano.github.io/docs-ui/main
 // :url-ci-pipelines: {url-project}/pipelines
 // :img-ci-status: {url-project}/badges/master/pipeline.svg
 :url-docs-home: https://github.com/riptano/docs-home