For example two redis containers.

Can we do the following?

apiVersion: apps/v1
kind: Deployment
metadata:
  name: webserver
  labels:
    app: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.16-alpine
        ports:
        - containerPort: 80
      - name: redis1
        image: redis
        ports:
        - containerPort: 891
      - name: redis2
        image: redis
        ports:
        - containerPort: 789