In Kubernetes you have the ability to dynamically grab the name of a pod and reference it in a yaml file (Pod Field) like so:

env:
- name: POD_NAME
  valueFrom:
    fieldRef:
      fieldPath: metadata.name

and reference it later in the yaml file like so:

- name: FOO
  value: $(POD_NAME)-bar

Where in the case of a StatefulSet the value of foo may be something like "app_thing-0-bar, app_thing-1-bar ... etc". However this doesn't seem to work in dynamically setting the name of a configmap. For example, the following configmap:

apiVersion: v1
kind: ConfigMap
metadata:
  name: app_thing-0-config
data:
  FOO: BAR

and this in the StatefulSet deployment yaml:

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: app_thing
.
.
.
.
.
    envFrom:
    - configMapRef:
      name: $(POD_NAME)-config

will not reference the configmap correctly as it doesn't seem to like the $() syntax. Is there any way to do this without resorting to init containers and entrypoint scripting?