Support for building PR previews with secrets (ProjectPythia#108)

* Support for building PR previews with secrets

* Remove cruft

.github/workflows/trigger-book-build.yaml

@@ -1,46 +1,11 @@
 name: trigger-book-build
 on:
   pull_request:
-env:
-  ARM_USERNAME: ${{ secrets.ARM_USERNAME }}
-  ARM_PASSWORD: ${{ secrets.ARM_PASSWORD }}
 
 # instead of calling build-book directly, we will create and upload an artifact containing the source (minus .github directory)
 
 jobs:
   get-code:
-    runs-on: ubuntu-latest
-    defaults:
-      run:
-        shell: bash -l {0}
-    steps:
-      - uses: actions/checkout@v3
-
-      - name: Remove .github directory
-        id: remove_directory
-        run: |
-          rm -rf .github/
-
-      - name: Zip the code
-        run: |
-          set -x
-          set -e
-          if [ -f pr_code.zip ]; then
-              rm -rf pr_code.zip
-          fi
-          zip -r pr_code.zip .
-
-      - name: Upload zipped code artifact
-        uses: actions/upload-artifact@v3
-        with:
-          name: code-zip-${{ github.event.number }}
-          path: ./pr_code.zip
-  # build:
-  #   uses: ProjectPythia/cookbook-actions/.github/workflows/build-book.yaml@main
-  #   secrets:
-  #     ARM_USERNAME: ${{ secrets.ARM_USERNAME }}
-  #     ARM_PASSWORD: ${{ secrets.ARM_PASSWORD }}
-  #   with:
-  #     environment_name: radar-cookbook-dev
-  #     artifact_name: book-zip-${{ github.event.number }}
-  #     # Other input options are possible, see ProjectPythia/cookbook-actions/.github/workflows/build-book.yaml
+    uses: ProjectPythia/cookbook-actions/.github/workflows/get-code.yaml@main
+    with:
+      code_artifact_name: code-zip-${{ github.event.number }}

.github/workflows/trigger-preview.yaml

@@ -6,18 +6,35 @@ on:
     types:
       - requested 
       - completed
-
+env:
+  ARM_USERNAME: ${{ secrets.ARM_USERNAME }}
+  ARM_PASSWORD: ${{ secrets.ARM_PASSWORD }}
+
 jobs:
   find-pull-request:
     uses: ProjectPythia/cookbook-actions/.github/workflows/find-pull-request.yaml@main
-  deploy-preview:
+
+  build-book-for-preview:
     needs: find-pull-request
     if: github.event.workflow_run.conclusion == 'success'
+    uses: ProjectPythia/cookbook-actions/.github/workflows/build-book.yaml@main
+    secrets:
+      ARM_USERNAME: ${{ secrets.ARM_USERNAME }}
+      ARM_PASSWORD: ${{ secrets.ARM_PASSWORD }}
+    with:
+      environment_name: radar-cookbook-dev
+      artifact_name: book-zip-${{ needs.find-pull-request.outputs.number }}
+      build_from_code_artifact: "true"
+      code_artifact_name: code-zip-${{ needs.find-pull-request.outputs.number }}
+
+  deploy-preview:
+    needs: build-book-for-preview
+    if: github.event.workflow_run.conclusion == 'success'
     uses: ProjectPythia/cookbook-actions/.github/workflows/deploy-book.yaml@main
     with:
       artifact_name: book-zip-${{ needs.find-pull-request.outputs.number }}
       destination_dir: _preview/${{ needs.find-pull-request.outputs.number }}  # deploy to subdirectory labeled with PR number
-      is_preview: 'true'
+      is_preview: 'false'  # it is a preview but deployed from main branch context
 
   preview-comment:
     needs: find-pull-request