What is Docker?

Docker is an open-source platform designed to create, deploy, and manage applications in lightweight, portable, and isolated environments called containers. It allows developers to package applications along with all their dependencies into a single unit that can run consistently across various environments.

What Does Docker Do?

1. Build: Docker helps build application environments using a file (Dockerfile) that defines how the container is constructed, including the base OS, application code, libraries, and tools.
2. Ship: Docker enables developers to package the application and dependencies into a portable Docker image that can be shared and distributed.
3. Run: Docker containers (instances of images) can run on any system that has Docker installed, ensuring consistency between development, testing, and production environments.

Key Components of Docker

Docker consists of several key components that work together:

1. Docker Engine

2. Dockerfile

3. Docker Images

4. Docker Containers

5. Docker Compose

6. Docker Storage

7. Docker Networking

8. Docker Hub

Docker Architecture

Common Docker Commands: