Learn Docker

Docker is one of the most important tools used in modern software development.

It allows developers to package applications together with all their dependencies so they run consistently across different environments.

This means code that runs on a developer’s computer will run the same way on:

• another developer’s computer
• testing environments
• production servers

Docker solves the classic problem:

“It works on my machine.”

What You Will Learn

This module will teach Docker from the ground up.

Topics include:

• What Docker is and why it exists
• Installing Docker on different operating systems
• Running containers
• Understanding Docker images
• Writing Dockerfiles
• Using Docker Compose
• Managing container networking
• Persisting data with volumes
• Debugging container issues
• Using Docker in real development projects

Learning Path

If you are new to Docker, follow the lessons in this order:

1. What is Docker
2. Installing Docker
3. Docker Terminology
4. Images and Containers
5. Running your first container
6. Managing Containers
7. Dockerfile Basics
8. Building Images
9. Docker Compose
10. Volumes and Persistent Data
11. Container Networking
12. Debugging Containers
13. Docker Security Basics
14. Docker in Real Projects
15. Docker + Git Workflow
16. Common Docker Mistakes
17. Interactive Docker Visualizer

Why Developers Use Docker

Docker provides several major benefits:

Consistency

Applications run the same everywhere.

Isolation

Each container runs independently.

Portability

Containers can run on almost any system.

Reproducibility

You can recreate environments easily.

Next Lesson

Start with:

➡ What is Docker