pin GHA versions. readme and workflow tweaks (#15)

.github/workflows/call-local-docker-build.yaml

@@ -17,6 +17,18 @@ on:
       - '.github/linters/**'
 
 jobs:
+
+  testing-event-messages:
+    if: always()
+    runs-on: ubuntu-latest
+    steps:
+      -
+        run: |
+          echo "event_name: ${{ github.event_name }}"
+          # echo "event.workflow_run: ${{ github.event.workflow_run }}"
+          echo "event.head_commit: ${{ github.event.head_commit }}"
+          echo "event.head_commit.message: ${{ github.event.head_commit.message }}"
+
   call-docker-build:
 
     name: Call Docker Build