apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: foo
spec:
  replicas: 1
  template:
    metadata:
      labels:
        name: foo
    spec:
      containers:
      - name: foo
        image: username/image:tag
        # command that to be executed at run time
        command: ["bar"]
        args:
        # This is the flag to pass at runtime
        - -a=A
        - -b=B
        ports:
        - containerPort: 9500