use statefulset instead of deployment

Author: soerenschneider

apps/mealie/components/postgres/kustomization.yaml

@@ -2,7 +2,7 @@
 apiVersion: kustomize.config.k8s.io/v1alpha1
 kind: Component
 resources:
-  - postgres-deployment.yaml
+  - postgres-sts.yaml
   - postgres-service.yaml
 configMapGenerator:
   - name: mealie

apps/mealie/components/postgres/postgres-deployment.yaml renamed to apps/mealie/components/postgres/postgres-sts.yaml

@@ -1,9 +1,10 @@
 ---
 apiVersion: apps/v1
-kind: Deployment
+kind: StatefulSet
 metadata:
   name: postgres
 spec:
+  serviceName: postgres
   replicas: 1
   selector:
     matchLabels: