Merge pull request #25089 from scoulomb-dup-fork/cm-cmd-args

Improve configmap usage as pod command and args

Author: k8s-ci-robot

content/en/docs/tasks/configure-pod-container/configure-pod-configmap.md

@@ -532,7 +532,7 @@ This functionality is available in Kubernetes v1.6 and later.
 
 ## Use ConfigMap-defined environment variables in Pod commands
 
-You can use ConfigMap-defined environment variables in the `command` section of the Pod specification using the `$(VAR_NAME)` Kubernetes substitution syntax.
+You can use ConfigMap-defined environment variables in the `command` and `args` of a container using the `$(VAR_NAME)` Kubernetes substitution syntax.
 
 For example, the following Pod specification
 

content/en/examples/pods/pod-configmap-env-var-valueFrom.yaml

@@ -6,7 +6,7 @@ spec:
   containers:
     - name: test-container
       image: k8s.gcr.io/busybox
-      command: [ "/bin/sh", "-c", "echo $(SPECIAL_LEVEL_KEY) $(SPECIAL_TYPE_KEY)" ]
+      command: [ "/bin/echo", "$(SPECIAL_LEVEL_KEY) $(SPECIAL_TYPE_KEY)" ]
       env:
         - name: SPECIAL_LEVEL_KEY
           valueFrom: