wsargent/docker-cheat-sheet

This repository is a reference guide, a cheat sheet, for Docker, a tool that lets developers package applications into self-contained units called containers. A container holds everything an application needs to run (code, libraries, settings) so it behaves the same way on any computer, whether that is a developer's laptop, a test server, or a production machine in the cloud. The cheat sheet compiles the most commonly used Docker commands and concepts in one place: how to create and manage containers, how to build container images, how to connect containers over networks, how to attach persistent storage (called volumes), how to expose network ports so apps are reachable, and how to set up multi-container applications using Docker Compose. It also covers best practices and basic security guidance. You would use this resource when you are learning Docker and need a quick reference, or when you are working with Docker regularly and want to look up the exact command syntax without digging through official documentation. It is particularly useful for developers, sysadmins, and DevOps engineers who need a fast lookup for everyday tasks like starting containers, checking what is running, pulling images from Docker Hub, or writing a Dockerfile. The guide covers installation on Linux, macOS, and Windows, and includes practical command examples throughout.