podman env from configmap

configmap.yml

apiVersion: v1
kind: ConfigMap
metadata:
  name: config
data:
  FOO: bar

pod.yml

# Save the output of this file and use kubectl create -f to import
# it into Kubernetes.
#
# Created with podman-3.4.2
apiVersion: v1
kind: Pod
metadata:
  labels:
    app: demo
  name: demo
spec:
  containers:
  - name: sleep
    command: ["sleep"]
    args: ["100000"]
    image: busybox
    securityContext:
      capabilities:
        drop:
        - CAP_MKNOD
        - CAP_NET_RAW
        - CAP_AUDIT_WRITE
    tty: true
    envFrom:
    - configMapRef:
      name: config
      optional: false
  restartPolicy: Never