如何使用带有等号(=)分隔的键/值的ConfigMap中的值？

key1=value1
key2=value2
key3=value3

kubectl create configmap my-config --from-file=config.txt

apiVersion: v1
kind: Pod
metadata:
  name: my-pod
spec:
  containers:
    - name: my-container
      image: my-image
      env:
        - name: KEY1
          valueFrom:
            configMapKeyRef:
              name: my-config
              key: key1
        - name: KEY2
          valueFrom:
            configMapKeyRef:
              name: my-config
              key: key2

apiVersion: v1
kind: Pod
metadata:
  name: my-pod
spec:
  containers:
    - name: my-container
      image: my-image
      volumeMounts:
        - name: config-volume
          mountPath: /etc/config
      volumes:
        - name: config-volume
          configMap:
            name: my-config