kubectl create -f kubernetes-config.yaml

error: error validating "kubernetes-config.yaml": error validating data: ValidationError(Deployment.spec.template.spec.containers): invalid type for xxxxxxxxx.containers: got "map", expected "array"; if you choose to ignore these errors, turn validation off with --validate=false

apiVersion: apps/v1
kind: Deployment
metadata:
    name: devops-deployment
    labels:
        app: xxxx
        tier: frontend
spec:
    replicas: 3
    selector:
        matchLabels:
            app: xxxx
            tier: frontend
    template:
        metadata:
            labels:
                app: xxxxx
                tier: frontend
        spec:
            containers:
                name: devops-demo
                image: gcr.io/xxxxxxx/devops-demo:latest
                ports:
                    containerPort: 8080