I get the error: python: can't open file 'app.py': [Errno 2] No such file or directory when I try to create a deployment. I have included the folder structure, deployment and PVC manifests.

When I create a container from the docker image which I built using the docker file below, it runs fine - STATUS: Running.

I suspect it might have something to do with the persistent volumes or the way I have written my paths. I have tried the long-form (/var/www/code/order_service/app..) for my paths as well but face the same issue.

I'll appreciate any help. Thanks in advance guys.

Docker File

FROM python:3-alpine3.10


COPY ./app/requirements.txt /app/requirements.txt

WORKDIR /app

RUN apk add --update \
     bash \
     curl \
     py-mysqldb \
     gcc \
     libc-dev \
     mariadb-dev \
     nodejs \
     npm \
  && pip install --upgrade pip  \
  && pip install -r requirements.txt \
  && rm -rf /var/cache/apk/*

COPY ./app/package.json /app/package.json
RUN npm install

COPY ./app /app

CMD ["python", "app.py"]

Folder structure

code
  order_service
    app
     app.py

Here is my manifest:

DEPLOYMENT

apiVersion: apps/v1
kind: Deployment
metadata:
  creationTimestamp: null
  labels:
    io.kompose.service: order
  name: order
spec:
  replicas: 1
  selector:
    matchLabels:
      io.kompose.service: order
  strategy:
    type: Recreate
  template:
    metadata:
      creationTimestamp: null
      labels:
        io.kompose.service: order
    spec:
      containers:
      - image: order:1.0
        imagePullPolicy: IfNotPresent
        name: order
        ports:
        - containerPort: 5000
        resources: {}
        volumeMounts:
        - mountPath: ./app
          name: order-claim0
      restartPolicy: Always
      volumes:
      - name: order-claim0
        persistentVolumeClaim:
          claimName: order-claim0
status: {}


PVC

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  creationTimestamp: null
  labels:
    io.kompose.service: order-claim0
  name: order-claim0
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 100Mi
status: {}