Replication controller with downward API

purchases-rc.yaml

apiVersion: v1
kind: ReplicationController
metadata:
  name: purchases 
spec:
  replicas: 1
  selector:
    app: purchases
  template:
    metadata:
      labels:
        app: purchases
    spec:
      volumes:
      - name: service-config
        configMap:
          name: purchases-service-config
      containers:
      - name: purchases-svc
        image: "${IMAGE}"
        ports:
          - containerPort: 8081
        env:
          - name: SVC_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: SVC_NAMESPACE
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
      - name: esp
        image: "${ESP_IMAGE}"
        args: [
          "--service_json_path", "/tmp/service-config/purchases.json",
          "--backend", "localhost:8081",
          "--dns", "${dns}"
        ]
        ports:
          - containerPort: 8080
        securityContext:
          privileged: true
        volumeMounts:
        - mountPath: /tmp/service-config
          name: service-config
          readOnly: true