envFrom:

Official example:

apiVersion: v1
kind: Pod
metadata:
  name: dapi-test-pod
spec:
 containers:
   - name: test-container
 
     image: k8s.gcr.io/busybox
 
     command: [ "/bin/sh", "-c", "env" ]
 
     envFrom:
 
     - configMapRef:
 
         name: special-config

restartPolicy: Never