add a demo yaml

.github/workflows/CERT_level1_pipeline_list_demo.yml

@@ -0,0 +1,18 @@
+name: CERT-level1-pipeline-list-new
+
+on:
+  workflow_dispatch:
+  push:
+    paths:
+      - 'pipe/processed_datums_reader/level1_pipeline_list.txt'
+  workflow_dispatch: {} # Allows trigger of workflow from web interface
+
+env:
+  ACTIVE_CONTEXT: cert
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+      - name: Put file
+        uses: ./.github/actions/put-file
+