This guide will walk you through creating a simple Python Hello World app, containerizing it with Docker, and running it locally.

git clone https://github.com/atulkamble/pythonhelloworld.git
cd pythonhelloworld

.
├── Dockerfile
└── helloworld.py

touch helloworld.py

Open and add the following code:

print("Hello, World")

Check the file:

cat helloworld.py

Run it locally to test:

python helloworld.py

touch Dockerfile

Edit and add the following content:

FROM python:latest
WORKDIR /app
COPY helloworld.py .
CMD ["python", "helloworld.py"]

Check files:

ls

docker build -t docker.io/atuljkamble/pythonhelloworld .

Check Docker images:

docker images

docker push docker.io/atuljkamble/pythonhelloworld

docker pull docker.io/atuljkamble/pythonhelloworld

docker run docker.io/atuljkamble/pythonhelloworld

Check running containers:

docker container ls
docker ps -a

Hello, World from Dockerized Python App!

• Make sure you are logged in to Docker Hub before pushing:

  docker login

• Replace atuljkamble with your Docker Hub username if different.

Atul Kamble

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