Add GH workflow to trigger redeploy after new packages are published (#…

…2493)

.github/workflows/trigger-redeploy.yaml

@@ -0,0 +1,20 @@
+name: Trigger Redeploy
+
+on:
+  # run whenever a new maproulette/maproulette-frontend package is published to GHCR
+  registry_package:
+    types: [published]
+
+jobs:
+  trigger:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Send trigger-workflow webhook to maproulette-deploy repository
+        run: |
+          curl -L \
+            -X POST \
+            https://api.github.com/repos/maproulette/maproulette-deploy/dispatches \
+            -H "Accept: application/vnd.github+json" \
+            -H "Authorization: Bearer ${{ secrets.GITHUB_TOKEN }}" \
+            -d '{"event_type": "trigger-workflow" }'