Docker has revolutionized the way applications are developed and deployed. This Docker cheatsheet is your comprehensive guide to mastering Docker, complete with clear definitions and practical examples. Whether you’re a novice or a seasoned pro, this guide will help you streamline your Docker workflow.
What is Docker?
Docker is an open-source platform for developing, shipping, and running applications in containers. Containers package an application and its dependencies into a single unit, ensuring consistency across various environments.
Basic Docker Commands
Get started with these fundamental Docker commands:
docker run
Run a container from an image.
docker run -d -p 80:8080 my-appdocker build
Build an image from a Dockerfile.
docker build -t my-image .docker pull
Download an image from a registry.
docker pull my-imagedocker push
Push an image to a registry.
docker push my-imageManaging Containers
Efficiently manage containers with these commands:
Listing Containers
List running containers.
docker psStopping and Removing Containers
Stop and remove containers.
docker stop my-container
docker rm my-containerWorking with Images
Master image manipulation with these commands:
Listing Images
List downloaded images.
docker imagesRemoving Images
Remove unused images.
docker image pruneInspecting Images
Inspect image details.
docker inspect my-imageDocker Compose
Simplify multi-container applications with Docker Compose:
Defining Services
Define services in a docker-compose.yml file.
version: '3'
services:
web:
image: nginxRunning Services
Start services.
docker-compose upStopping Services
Stop services.
docker-compose downNetwork and Volume Management
Manage networks and volumes efficiently:
Creating a Docker Network
Create a custom network.
docker network create my-networkCreating a Docker Volume
Create a named volume.
docker volume create my-volumeAdvanced Docker Usage
Explore advanced Docker topics:
Dockerfile Best Practices
Follow Dockerfile best practices for efficient image builds.
Docker Hub and Registries
Publish and share images on Docker Hub or private registries.
Docker Swarm
Explore container orchestration with Docker Swarm for scaling and management.
Conclusion
Docker is a game-changer in the world of software development and deployment. This cheatsheet serves as your go-to reference for Docker commands and concepts. Whether you’re creating images, managing containers, or orchestrating multi-container applications, Docker’s versatility empowers you to build and deploy with confidence.