Getting Started with Docker Containers

Docker has revolutionized the way we build, ship, and run applications. In this guide, we’ll explore the fundamental concepts of containerization.

What is Docker?

Docker is an open platform for developing, shipping, and running applications. Docker enables you to separate your applications from your infrastructure so you can deliver software quickly.

Basic Commands

Here are some essential Docker commands to get you started:

# Pull an image
docker pull nginx:latest

# Run a container
docker run -d -p 8080:80 --name my-web-server nginx

# List running containers
docker ps

# Stop a container
docker stop my-web-server

Docker Compose

Docker Compose is a tool for defining and running multi-container Docker applications.

version: '3'
services:
  web:
    image: nginx:alpine
    ports:
      - "80:80"
  db:
    image: postgres:15
    environment:
      POSTGRES_PASSWORD: example

By using docker-compose up, you can start your entire application stack with a single command.