try kustomize patch with argocd

chart/values.yaml

@@ -1,9 +1,21 @@
 tools:
-  - pgbouncer
-  #- pgcat # trop contraignant: lister tous les databases/users et auth_type md5 uniquement
-  # - prometheus
-  - hashicorp-vault
-  - crowdsec
-  - redis
-  - clickhouse
-  - grafana
+  pgbouncer: {}
+  #pgcat # trop contraignant: lister tous les databases/users et auth_type md5 uniquement: {}
+  # prometheus: {}
+  hashicorp-vault: {}
+  crowdsec: {}
+  redis: {}
+  clickhouse:
+    patches:
+      - target:
+          kind: StatefulSet
+          name: clickhouse
+        patch: |-
+          - op: add
+            path: /spec/template/spec/containers/0/volumeMounts/-
+            value:
+              name: config-volume
+              mountPath: /etc/clickhouse-server/users.d/custom-users.xml
+              subPath: custom-users.xml
+              readOnly: true
+  grafana: {}