List of Content

• Docker CheatSheet
• Docker Architecture Detailed
• Built a Dockerfile
• Docker Compose Up

Awesome Docker Link

• Good Docker Files

Docker Overview

I won’t re-explain everything about Docker, but here are some key points that I think are important:

So, Why Docker?

Docker is a platform for building, shipping, and running applications using containerization. It allows developers to package applications and their dependencies into lightweight, portable containers that can run consistently across different environments.

It provides:

• More efficient use of system resources
• Faster boot time
• Consistent operating environment
• Continuous delivery and deployment
• Easier migration
• Easier maintenance and expansion

Docker Terminologies

Dockerfile

• A text file that defines how to build a Docker image.
• Contains instructions for creating an image package for running applications.

Docker Repository

• A storage and distribution system for Docker images.
• Can be hosted on public (e.g., Docker Hub) or private registries.
• Speeds up CI/CD pipelines by providing a central repository for images for the community to use.

Docker Volume

• A mechanism for persistent data storage in Docker containers.
• Ensures data persists even if a container is destroyed or crashes.
• Use cases like databases benefit from this.

Docker Compose

• A tool for defining and running multi-container Docker applications.
• Uses a YAML file to configure application services, networks, and volumes.

Docker Hub

• A cloud-based registry service for storing and sharing Docker images.
• Acts as a central repository for collaboration within the container community.

Orchestration

• The process of automating the deployment, management, and scaling of containerized applications.
• Examples: Kubernetes, Docker Swarm, Red Hat OpenShift.

Others

• Tools like Nginx, Kong, Tyk, Grafana, and ArgoCD can benefit from the use of Docker.