k8s-demo-app.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  creationTimestamp: null
  labels:
    app: demo-app
  name: demo-app
spec:
  replicas: 1
  selector:
    matchLabels:
      app: demo-app
  strategy: {}
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: demo-app
    spec:
      volumes:
        - emptyDir: {}
          name: shared
      containers:
        - image: hashicorp/vault
          imagePullPolicy: IfNotPresent
          name: vaultagent
          command: ["/usr/bin/tail", "-f", "/dev/null"]
          resources: {}
          volumeMounts:
            - name: shared
              mountPath: /config
        - image: mariadb
          imagePullPolicy: IfNotPresent
          name: mysqlapp
          resources: {}
          command:
            - sh
            - -c
            - |
              echo "waiting for script to become available"
              while true
              do
                test -e /config/mariadb-script && /config/mariadb-script
                sleep 1
              done
          volumeMounts:
            - name: shared
              mountPath: /config
        - image: postgres
          imagePullPolicy: IfNotPresent
          name: postgresapp
          resources: {}
          command:
            - sh
            - -c
            - |
              echo "waiting for script to become available"
              while true
              do
                test -e /config/postgres-script && /config/postgres-script
                sleep 1
              done
          volumeMounts:
            - name: shared
              mountPath: /config
status: {}