I am building the Dockerfile for python script which will run in minikube windows 10 system below is my Dockerfile
Building the docker using the below command docker build -t python-helloworld .
and loading that in 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: OnFailureBelow is the command to run this Kubernetes job kubectl create -f pythoncronjob.yml
But getting the below 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"
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.pyset shebang to your py file:
#!/usr/bin/env python # whatever your defualt python to run the scriptor setup the command the same as you did in Dockerfile
I recently encountered the problem when running a logstash container
standard_init_linux.go:211: exec user process caused "exec format error"
Noticed that the shebang line (#!/bin/sh) on the entrypoint.sh was typed in the second line instead of the first line of the entrypoint.sh file.
When the shebang line is made as to the first line in the script, the error went away and "docker run -it logstashimage:latest sh" worked perfectly.
Another two reasons could raise this issue if you run docker on Windows: