Add Kustomize deployment configs

apiVersion: apps/v1

kind: Deployment

metadata:

  name: dovecot

  labels: &labels

    app.kubernetes.io/name: dovecot

    app.kubernetes.io/version: 2.3.19

    app.kubernetes.io/instance: general

    app.kubernetes.io/component: imap-server

    app.kubernetes.io/part-of: mailbox

spec:

  selector:

    matchLabels:

      app.kubernetes.io/name: dovecot

      app.kubernetes.io/instance: general

  strategy:

    type: RollingUpdate

    rollingUpdate:

      maxSurge: 1

      maxUnavailable: 1

  minReadySeconds: 1

  template:

    metadata:

      name: dovecot

      labels: *labels

    spec:

      containers:

      - name: dovecot

        image: docker.kodo.org.uk/docker/dovecot:2.3.19-1

        imagePullPolicy: IfNotPresent

        resources:

          requests:

            memory: 50Mi

apiVersion: kustomize.config.k8s.io/v1beta1

kind: Kustomization

resources:

- deployment.yaml