containerization-and-devops

Class 2 - Docker Hands-on Projects

This class focuses on practical implementation of Docker using real-world programming examples.

In this class, we containerized applications written in:

• Java
• Python

Both projects demonstrate Docker image creation, container execution, image layering, and Docker Hub interaction.

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Folder Structure

Class-2/
│
├── java-docker/
│   ├── Dockerfile
│   ├── second.Dockerfile
│   ├── Hello.java
│   └── README.md
│
└── python-docker/
    ├── Dockerfile
    ├── nosrc.Dockerfile
    ├── app.py
    └── README.md

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Topics Covered

1. Java Docker Project

• Creating a simple Java application
• Writing a Dockerfile
• Building Docker images
• Running containers
• Creating alternate Dockerfile versions
• Tagging and pushing image to Docker Hub

Open documentation: Java Docker Project

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2. Python Docker Project

• Creating a Python application with user input
• Installing dependencies inside Docker image
• Building and running containers interactively
• Checking image layers using docker history
• Creating alternate Dockerfile (without source copy)
• Using volume mounting

Open documentation: Python Docker Project

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Learning Outcomes

After completing Class 2, we are able to:

• Write Dockerfiles for different languages
• Build and tag Docker images
• Run containers interactively
• Analyze image layers
• Push images to Docker Hub
• Use volume mounting for dynamic execution

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