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docker-python-helloworld

Taking the simple python hello world script further. This example creates a docker container containing a python hello world script thar prints "Hello World!".

Note: Refer python-helloworld repo.

Prerequisites

• Python - >=3.5
• Visual Studio Code
• Docker

System Configuration at time of test

• macOS Catalina - Version 10.15.3
• Python - Version 3.7.6
• Docker Desktop - Version 2.2.0.4 (43472)

Initial Setup

Creating Python code

Follow the steps outlined in python-helloworld GitHub project to create a the Python script.

Code

Add Dockerfile

FROM python:3.7-alpine
COPY ./src/helloworld.py helloworld.py

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

Build docker image

To build the docker image run the following command on the terminal: docker build -t python-helloworld:v1 .

To list the created docker images run the command on the terminal: docker images

Test

Run the following command to spin up the container server: docker run python-helloworld:v1

To list all the containers running run this command on the terminal: docker ps -a

Cleanup

To delete the container that was created use this command: docker rm {container_id}

To delete the docker image that was created: docker rmi python-helloworld:v1

Useful Links

• https://medium.com/@pandit.summit/kubernetes-cron-job-with-python-image-in-minikube-windows-10-ac33851d573d
• https://github.com/ameyrupji-k8s/python-helloworld
• https://github.com/ameyrupji-k8s/docker-nginx-static-html-demo
• https://github.com/ameyrupji-k8s/docker-spring-boot-helloworld

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