Test example for solvaholic/octodns-sync#41

.github/workflows/octodns-sync.yml

@@ -1,41 +1,38 @@
-name: Run octodns-sync to test config
-
-# Use this workflow to:
-# - Manually test octodns config
-# - Automatically test octodns config
-
 on:
-  # Run when manually triggered
-  workflow_dispatch:
-
-  # Run on pull request open, reopen, and synchronize
-  pull_request:
-     branches: [main]
-
+  pull_request_target:
 jobs:
-  test:
-    runs-on: ubuntu-latest
+  test-and-comment:
+    runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v2
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
+      - name: Checkout main
+        uses: actions/checkout@v2
+      - name: Checkout config files from PR
+        id: prhead
+        run: |
+          # Set $_sha to the first 7 char of PR head SHA
+          _sha="$(echo "${{ github.event.pull_request.head.sha }}" | cut -c 1-7)"
+          # Fetch PR head commit
+          git fetch origin refs/pull/${{ github.event.pull_request.number }}/head
+          # Checkout *.yaml from PR head commit
+          git checkout "$_sha" -- *.yaml
+          # Set output 'sha' to $_sha
+          echo "::set-output name=sha::${_sha}"
       - name: Test changes to DNS config
         id: octodns-sync
-        uses: solvaholic/octodns-sync@issue40
+        uses: solvaholic/octodns-sync@main
         with:
           config_path: test-config.yaml
-      - name: A piece of duct tape
-        id: meta
+      - name: Get plan output
+        id: plan
         run: |
+          # Parse plan output into $_plan
           _plan="$(cat ${GITHUB_WORKSPACE}/octodns-sync.plan)"
           _plan="${_plan//'%'/'%25'}"
           _plan="${_plan//$'\n'/'%0A'}"
           _plan="${_plan//$'\r'/'%0D'}" 
+          # Set output 'plan' to $_plan
           echo "::set-output name=plan::${_plan}"
-          _sha="$(echo "${{ github.event.pull_request.head.sha }}" | cut -c 1-7)"
-          echo "::set-output name=sha::${_sha}"
       - name: Find Comment
-        if: ${{ github.event_name != 'workflow_dispatch' }}
         uses: peter-evans/find-comment@v1
         id: fc
         with:
@@ -49,9 +46,9 @@ jobs:
           issue-number: ${{ github.event.pull_request.number }}
           comment-id: ${{ steps.fc.outputs.comment-id }}
           body: |
-            ## OctoDNS Plan for `${{ steps.meta.outputs.sha }}`
+            ## OctoDNS Plan for `${{ steps.prhead.outputs.sha }}`
 
-            ${{ steps.meta.outputs.plan }}
+            ${{ steps.plan.outputs.plan }}
 
             Automatically generated by octodns-sync
           edit-mode: replace