show the docker-compose.prod.yaml file before setting canary (#33540)

.github/workflows/azure-prod-build-deploy.yml

@@ -159,6 +159,10 @@ jobs:
         run: |
           sed 's|#{IMAGE}#|${{ env.DOCKER_IMAGE }}|g' docker-compose.prod.tmpl.yaml > docker-compose.prod.yaml
 
+      - name: 'Show the created docker-compose.prod.yaml'
+        run: |
+          cat docker-compose.prod.yaml
+
       - name: 'Apply updated docker-compose.prod.yaml config to canary slot'
         run: |
           az webapp config container set --multicontainer-config-type COMPOSE --multicontainer-config-file docker-compose.prod.yaml --slot canary -n ghdocs-prod -g docs-prod