helm: handle empty persistence.config values

charts/scrutiny/charts/web/templates/deployment.yaml

@@ -54,11 +54,15 @@ spec:
           resources:
             {{- toYaml .Values.resources | nindent 12 }}
           volumeMounts:
+            {{- with .Values.persistence.config }}
             - mountPath: /opt/scrutiny/config
               name: config
+            {{- end }}
       volumes:
+        {{- with .Values.persistence.config }}
         - name: config
-          {{- .Values.persistence.config | toYaml | nindent 10 }}
+          {{- . | toYaml | nindent 10 }}
+        {{- end }}
       {{- with .Values.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}

charts/scrutiny/charts/web/values.yaml

@@ -6,7 +6,7 @@ env:
   SCRUTINY_WEB_INFLUXDB_HOST: scrutiny-influxdb2
 
 persistence:
-  config:
+  config: {}
     # Volume spec, without `name`.
     #emptyDir: {}