📦 Python Hello World Docker Project

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

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

📁 Project Structure

.
├── Dockerfile
└── helloworld.py

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📜 Steps to Build and Run

1️⃣ Create Python Hello World Script

touch helloworld.py

Open and add the following code:

print("Hello, World from Dockerized Python App!")

Check the file:

cat helloworld.py

Run it locally to test:

python3 --version
python3 helloworld.py

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2️⃣ Create Dockerfile

touch Dockerfile

Edit and add the following content:

# Use official Python base image
FROM python:3.12-slim

# Set working directory
WORKDIR /app

# Copy local code to the container
COPY helloworld.py .

# Command to run the app
CMD ["python", "helloworld.py"]

Check files:

ls

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3️⃣ Build Docker Image

docker build -t atuljkamble/pythonhelloworld .

Check Docker images:

docker images

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4️⃣ Push Docker Image to Docker Hub

docker push atuljkamble/pythonhelloworld

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5️⃣ Pull Image (if testing from another system)

docker pull atuljkamble/pythonhelloworld

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6️⃣ Run Docker Container

docker run atuljkamble/pythonhelloworld

Check running containers:

docker container ls
docker ps -a

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✅ Output Example

Hello, World from Dockerized Python App!

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📌 Notes

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

  docker login

• Replace atuljkamble with your Docker Hub username if different.

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👨‍💻 Author

Atul Kamble

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