🐳 Basic Docker Image – DevOps Project

📌 Project Overview

This repository contains my first official DevOps project, focused on building and running a minimal Docker image using Alpine Linux.

The purpose of this project is to understand:

• How Docker images are built
• How containers execute commands
• How to version, document, and showcase DevOps work professionally using GitHub

This project is inspired by the roadmap.sh – Basic Dockerfile project and implemented with real DevOps practices.

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👨‍💻 About Me

Hi, I am Madhan, A BCA final-year student learning DevOps Engineering.

I am actively building hands-on projects to strengthen my skills in:

• Containerization
• Automation basics
• Linux system operations
• Professional documentation

This project represents my starting point as a DevOps Engineer.

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🎯 Project Goal

• Create a minimal Docker image

• Use Alpine Linux for lightweight containers

• Print meaningful project and identity information at runtime

• Follow real DevOps workflow:

  • Code
  • Build
  • Run
  • Document
  • Version with GitHub

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🛠️ Tech Stack Used

• Docker – Containerization
• Alpine Linux – Minimal base image
• Git & GitHub – Version control and project hosting
• Linux (Ubuntu) – Development environment
• Google Calendar – Task & productivity tracking
• Microsoft Teams – Project coordination and tracking

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📂 Project Structure

docker-img-devops/
├── Dockerfile
└── README.md

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📄 Dockerfile Explanation

The Dockerfile:

• Uses Alpine as the base image

• Executes multiple echo commands

• Prints:

  • Who I am
  • What I am learning
  • Why this project exists
  • The tech stack being used

This ensures the container itself explains the project purpose when run.

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▶️ How to Build the Docker Image

Run this command inside the project directory:

docker build -t docker-img-devops .

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▶️ How to Run the Container

docker run --rm docker-img-devops

Expected Output

Hi, I am Madhan.
I am a BCA final-year student learning DevOps engineering.
This is my DevOps project using Docker.
Tech Stack: Docker, Git & GitHub, Linux, Google Calendar, MS Teams.
Goal: Build, version, and document containerized applications professionally.

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✅ What I Learned from This Project

• Writing a clean and minimal Dockerfile
• Understanding Docker image layers
• Running containers and validating output
• Using Git properly (add, commit, push)
• Creating professional README documentation
• Treating even small projects like real DevOps work

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🚀 Next Steps

• Add versioned tags to Docker images
• Push image to Docker Hub
• Improve CMD → ENTRYPOINT usage
• Extend project with environment variables
• Create CI workflow for Docker builds

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📎 Project Status

✅ Completed 📦 Ready for showcase 🌱 Foundation DevOps project

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