chore: deploy to scalingo via git push

Signed-off-by: Maud Royer <[email protected]>

Author: jillro

.github/workflows/scalingo.yml

@@ -0,0 +1,23 @@
+name: Scalingo
+on:
+  push:
+    branches:
+      - staging
+jobs:
+  scalingo:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Add SSH key
+        uses: webfactory/[email protected]
+        with:
+          ssh-private-key: ${{ secrets.SCALINGO_SSH_PRIVATE_KEY }}
+      - name: Update known hosts
+        run: ssh-keyscan -H ssh.osc-fr1.scalingo.com >> ~/.ssh/known_hosts
+      - name: Push to Scalingo
+        run: |
+          git remote add scalingo ${{ secrets.SCALINGO_STAGING_REMOTE }}
+          git push scalingo staging