Gracefully shut down intermediary container during database image builds (#76)

Author: nicksantamaria

.github/workflows/run_db_trigger.yml

@@ -35,6 +35,8 @@ on:
         required: true
       SLACK_WEBHOOK_URL:
         required: true
+      DB_IMAGE_MARIADB_ROOT_PASSWORD:
+        required: true
 
 env:
   REGISTRY: ghcr.io
@@ -100,8 +102,9 @@ jobs:
             exit 1
           fi
 
-      - name: Stop the intermediary container
-        run: docker stop "${{ steps.container.outputs.id }}"
+      - name: Gracefully shutdown the intermediary container
+        run: docker exec -i "${{ steps.container.outputs.id }}" mysqladmin -u root -p${{ secrets.DB_IMAGE_MARIADB_ROOT_PASSWORD }} shutdown
+        continue-on-error: true
 
       - name: Download the DB image dockerfile
         run: curl -o Dockerfile.seed https://raw.githubusercontent.com/dpc-sdp/github-actions/main/.docker/Dockerfile.seed