How to pass environment variables in angular application with docker

For creating a file you need to use subPath.The value of the subPath must match the “key” of the ConfigMap. In the below example the key and subPath is config.yaml.

apiVersion: v1kind: ConfigMapmetadata:  name: sherlock-config  namespace: defaultdata:  config.yaml: |    namespaces:      - default    labels:      - "app"      - "owner"---apiVersion: v1kind: Podmetadata:  name: dapi-test-podspec:  containers:    - name: test-container      image: k8s.gcr.io/busybox      command: [ "/bin/sh", "-c", "ls /etc/config/" ]      volumeMounts:      - name: config-volume        mountPath: /etc/config/config.yaml        subPath: config.yaml  volumes:    - name: config-volume      configMap:        # Provide the name of the ConfigMap containing the files you want        # to add to the container        name: sherlock-config  restartPolicy: Never

kubectl describe cm sherlock-config

Name:         sherlock-configNamespace:    defaultLabels:       <none>Annotations:  kubectl.kubernetes.io/last-applied-configuration:                {"apiVersion":"v1","data":{"config.yaml":"namespaces:\n  - default\nlabels:\n  - \"app\"\n  - \"owner\"\n"},"kind":"ConfigMap","metadata":...Data====config.yaml: <------ This is the key----namespaces:  - defaultlabels:  - "app"  - "owner"Events:  <none>