keycloak: add temporary postgres db

keycloak/temp-postgres.yaml

@@ -0,0 +1,45 @@
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: postgresql-db
+spec:
+  serviceName: postgresql-db-service
+  selector:
+    matchLabels:
+      app: postgresql-db
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: postgresql-db
+    spec:
+      containers:
+        - name: postgresql-db
+          image: postgres:15
+          volumeMounts:
+            - mountPath: /data
+              name: cache-volume
+          env:
+            - name: POSTGRES_USER
+              value: testuser
+            - name: POSTGRES_PASSWORD
+              value: testpassword
+            - name: PGDATA
+              value: /data/pgdata
+            - name: POSTGRES_DB
+              value: keycloak
+      volumes:
+        - name: cache-volume
+          emptyDir: {}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: postgres-db
+spec:
+  selector:
+    app: postgresql-db
+  type: LoadBalancer
+  ports:
+  - port: 5432
+    targetPort: 5432