Standard_init_linux.go:211: exec user process caused “exec format error”

Question

I am building a Dockerfile for python script which will run in the minikube windows 10 system below is my Dockerfile

Building the docker using this below command docker build -t python-helloworld .

and loading that in the minikube docker demon docker save python-helloworld | (eval $(minikube docker-env) && docker load)

Docker File

FROM python:3.7-alpine

#add user group and ass user to that group

RUN addgroup -S appgroup && adduser -S appuser -G appgroup

#creates work dir   

WORKDIR /app

#copy python script to the container folder app

COPY helloworld.py /app/helloworld.py

#user is appuser

USER appuser

ENTRYPOINT  ["python", "/app/helloworld.py"]

pythoncronjob.yml file (cron job file)

apiVersion: batch/v1beta1

kind: CronJob

metadata:

  name: python-helloworld

spec:

  schedule: "*/1 * * * *"

  jobTemplate:

    spec:

      backoffLimit: 5

      template:

        spec:

          containers:

          - name: python-helloworld

            image: python-helloworld

            imagePullPolicy: IfNotPresent

            command: [/app/helloworld.py]

          restartPolicy: OnFailure

Below is the command to run the Kubernetes job 

kubectl create -f pythoncronjob.yml

I am getting the error

 job is not running scuessfully but when u ran the Dockerfile alone its work fine

standard_init_linux.go:211: exec user process caused "exec format error"

Answer 1

I can see that you add the command command: [/app/helloworld.py] to yaml file.

so you need to (in Dockerfile):

RUN chmod +x /app/helloworld.py

set shebang to your py file:

#!/usr/bin/env python # whatever your defualt python to run the script

or setup this command, as the same way you did in the Docker file

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