Add manual rollout workflow

.github/workflows/rollout.yml

@@ -0,0 +1,22 @@
+name: Rollout
+
+on: workflow_dispatch
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Install doctl
+        uses: digitalocean/action-doctl@v2
+        with:
+          token: ${{ secrets.DIGITALOCEAN_ACCESS_TOKEN }}
+
+      - name: Save DigitalOcean kubeconfig with short-lived credentials
+        run: doctl kubernetes cluster kubeconfig save --expiry-seconds 600 662138bb-8236-4da5-8c6d-c602fb6eef82
+
+      - name: Deploy to DigitalOcean Kubernetes
+        run: kubectl rollout restart deployment/louper
+
+      - name: Verify deployment
+        run: kubectl rollout status deployment/louper