Quick, immutable (with persistent mongodb), Strapi kubernetes config

strapi.yml

apiVersion: v1
data:
  database.json: |
    {
      "defaultConnection": "default",
      "connections": {
        "default": {
          "connector": "mongoose",
          "settings": {
            "uri": "mongodb://..."
          },
          "options": {
            "ssl": true
          }
        }
      }
    }

kind: ConfigMap
metadata:
  name: strapi-configmap
---
apiVersion: v1
data:
  build-strapi.sh: |
    #!/bin/sh
    /usr/local/bin/docker-entrypoint.sh strapi version
    cp /tmp/config/database.json /srv/app/config/environments/production/
    yarn add strapi-connector-mongoose strapi-provider-upload-google-cloud-storage
    strapi build
    strapi start

kind: ConfigMap
metadata:
  name: strapi-buildscript
---
apiVersion: v1
kind: Service
metadata:
  name: strapi-service
spec:
  type: LoadBalancer
  ports:
  - port: 1337
    targetPort: 1337
  selector:
    app: strapi
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: strapi-deployment
spec:
  replicas: 1

  strategy:
    type: RollingUpdate

  template:
    metadata:
      labels:
        app: strapi

    spec:
      volumes:
        - name: strapi-configmap
          configMap:
            name: strapi-configmap
            defaultMode: 0777
        - name: strapi-buildscript
          configMap:
            name: strapi-buildscript
            defaultMode: 0777
      containers:
        - image: strapi/strapi:3.0.0-beta.18.7-node12
          env:
            - name: NODE_ENV
              value: "production"
          name: strapi
          imagePullPolicy: Always
          volumeMounts:
           - name: strapi-configmap
             mountPath: /tmp/config
           - name: strapi-buildscript
             mountPath: /tmp/init
          resources:
            limits:
              cpu: "1000m"
              memory: "1Gi"
            requests:
              cpu: "100m"
              memory: "500Mi"
          ports:
            - containerPort: 1337
          command: ["/tmp/init/build-strapi.sh"]