Trigger build of powa-archivist on new release tag

.github/workflows/powa_archivist.yml

@@ -0,0 +1,29 @@
+name: Trigger build and push of powa-archivist image
+
+on:
+  tags:
+    - REL_*
+
+env:
+  TARGET_REPO: "powa-podman"
+  EVENT_TYPE: "powa-archivist"
+
+jobs:
+  trigger_build:
+    name: Trigger build and push of powa-archivist in powa-podman repo
+    runs-on: ubuntu-latest
+    steps:
+      - name: Trigger the powa-archivist-git repository dispatch
+        run: |
+          # Set variables
+          org="${{ github.repository_owner }}"
+          repo="${{ env.TARGET_REPO }}"
+          event_type="${{ env.EVENT_TYPE }}"
+
+          curl -L \
+            -X POST \
+            -H "Accept: application/vnd.github+json" \
+            -H "Authorization: Bearer ${{ secrets.DISPATCH_TOKEN }}" \
+            -H "X-GitHub-Api-Version: 2022-11-28" \
+            https://api.github.com/repos/${org}/${repo}/dispatches \
+            -d "{\"event_type\": \"${event_type}\"}"