a better backend deployment workflow

.gitea/workflows/backend_build-deploy-prod.yaml

@@ -0,0 +1,23 @@
+on:
+  push:
+    tags:
+      - v*
+
+name: Build and deploy the backend to production
+
+jobs:
+  build-and-push:
+    name: Build and push image
+    uses: ./workflow_build-image.yaml
+    with:
+      tag: stable
+    secrets:
+      PACKAGE_REGISTRY_ACCESS: ${{ secrets.PACKAGE_REGISTRY_ACCESS }}
+  
+  deploy-prod:
+    name: Deploy to production
+    uses: ./workflow_deploy-container.yaml
+    with:
+      environment: prod
+    secrets:
+      PACKAGE_REGISTRY_ACCESS: ${{ secrets.KUBE_CONFIG }}