add main deploy preview; use keep_files in build_book

Author: trevorcampbell

.github/workflows/build_book.yml

@@ -29,7 +29,8 @@ jobs:
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: source/_build/html
-          force_orphan: true
           cname: python.datasciencebook.ca
+          keep_files: true
+          # force_orphan: true # once peaceiris updates to v4, change this to true and keep_files: true for the PR / main branch deploy previews
 
 

.github/workflows/deploy_main_preview.yml

@@ -0,0 +1,37 @@
+name: Rebuild and deploy dev version of book to gh-pages branch in dev/ folder
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - source/**
+      
+jobs:
+  deploy-book:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      packages: write
+
+    steps:
+      - name: checkout
+        uses: actions/checkout@v2
+        with:
+          ref: 'main'
+          
+      - name: Build the book
+        run: |
+          ./build_html.sh
+
+       # Push the book's HTML to github-pages
+      - name: GitHub Pages action
+        uses: peaceiris/[email protected]
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: source/_build/html
+          keep_files: true
+          destination_dir: dev
+          # force_orphan: true # once peaceiris updates to v4, change this to true and keep_files: true for the PR / main branch deploy previews
+
+
+