Create staging workflow

.gitea/workflows/staging.yml

@@ -0,0 +1,32 @@
+name: 11ty build and deploy for STAGING ${{ gitea.repository }}
+run-name: 11ty build and deploy for STAGING ${{ gitea.repository }}
+on:
+  push:
+    branches: [ 'staging' ]
+jobs:
+  build-deploy:
+    runs-on: node-22
+    container:
+      volumes:
+        - /var/www:/www
+    steps:
+      - name: Clone code to runner
+        uses: actions/checkout@v4
+
+      - name: Move to directory
+        run: cd ${{ gitea.workspace }}
+
+      - name: Install dependencies
+        run: npm i
+
+      - name: Build 11ty site
+        run: npm run build
+
+      - name: Create folder if needed
+        run: if [ ! -d /www/staging-${{ gitea.event.repository.name }} ]; then mkdir /www/${{ gitea.event.repository.name }}; fi
+
+      - name: Copy built website
+        run: cp -r _site/. /www/staging-${{ gitea.event.repository.name }}
+
+      - name: Fix ownership
+        run: chown -R www-data:www-data /www/staging-${{ gitea.event.repository.name }}