feat(helm): add podAntiAffinity (soft), run instances across nodes

charts/backoffice/templates/deployment.yaml

@@ -54,3 +54,14 @@ spec:
                 name: {{ .Release.Name }}-nextauth
           resources:
             {{- toYaml .Values.backend.resources | nindent 12 }}
+      affinity:
+        podAntiAffinity:
+          # requiredDuringSchedulingIgnoredDuringExecution
+          preferredDuringSchedulingIgnoredDuringExecution:
+          - labelSelector:
+              matchExpressions:
+              - key: app.kubernetes.io/instance
+                operator: In
+                values:
+                - {{ .Release.Name }}
+              topologyKey: kubernetes.io/hostname