fix: set PGDATA to subdirectory to prevent lost+found crash

k8s/newspaper-extractor/db.yaml

@@ -1,4 +1,4 @@
-apiVersion: apps/v1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: newspaper-db
@@ -23,6 +23,8 @@ spec:
           value: mypassword
         - name: POSTGRES_DB
           value: mydatabase
+        - name: PGDATA
+          value: /var/lib/postgresql/data/pgdata
         ports:
         - containerPort: 5432
         volumeMounts: