Back up Nextcloud from CloudNativePG

apps/backup/postgresql/nextcloud/kustomization.yaml

@@ -19,6 +19,7 @@ patches:
                   - name: pg-dump
                     env:
                       - {name: BACKUP_TARGET, value: nextcloud}
-                      - {name: PGHOST, value: nextcloud-postgresql}
+                      - {name: PGHOST, value: nextcloud-cnpg-rw}
+                      - {name: PGUSER, value: postgres}
                       - name: PGPASSWORD
-                        valueFrom: {secretKeyRef: {name: nextcloud-postgresql, key: postgres-password}}
+                        valueFrom: {secretKeyRef: {name: nextcloud-cnpg-superuser, key: password}}