Docker and Kubernetes

Chapter 2: Docker Fundamentals

2.1 What is Docker?

Docker is the most popular containerization platform, enabling developers to package applications into containers.

Docker Components:

• Docker Engine: Runtime that builds and runs containers
• Docker Images: Read-only templates for containers
• Docker Containers: Running instances of images
• Docker Hub: Registry for sharing images

2.2 Docker Installation

Install Docker on your platform.

Installation Methods:

• Docker Desktop (Windows/Mac)
• Package managers (Linux)
• Cloud platforms (AWS, Azure, GCP)

2.3 Basic Docker Commands

docker --version          # Check version
docker ps                 # List running containers
docker images             # List images
docker pull image:tag     # Pull image from registry
docker run image:tag      # Run container
docker stop container_id  # Stop container
docker rm container_id    # Remove container