Markdown version of the official Docker cheatsheet

The official PDF cheatsheet can be found here.

This is the Markdown version of the official Docker cheatsheet, optimized for copy and paste! All rights belong to Docker.

Table of Contents

• Installation
• General Commands
• Images Commands
• Containers Commands
• Docker Hub Commands

Installation

• Docker Desktop is the official and easiest way to install a bundle of Docker Engine and other useful components: https://docs.docker.com/desktop/install
• Docker Engine can be installed separate if you are using a VM without a GUI: https://docs.docker.com/engine/install
• Docker Compose plugin can be installed separately after Docker Engine and Docker CLI: https://docs.docker.com/compose/install
• VS Code Docker extension for a GUI to work with Docker images, containers and more: https://code.visualstudio.com/docs/containers/overview
• General documentation: https://docs.docker.com/

General Commands

• Start the docker daemon

docker -d

• Get help with Docker. Can also use –help on all subcommands

docker --help

• Display system-wide information

docker info

Images Commands

Docker images are a lightweight, standalone, executable package of software that includes everything needed to run an application: code, runtime, system tools, system libraries and settings.

• Build an Image from a Dockerfile

docker build -t <image_name>

• Build an Image from a Dockerfile without the cache

docker build -t <image_name> . --no-cache

• List local images

docker images

• Delete an Image

docker rmi <image_name>

• Remove all unused images

docker image prune

Containers Commands

A container is a runtime instance of a docker image. A container will always run the same, regardless of the infrastructure. Containers isolate software from its environment and ensure that it works uniformly despite differences for instance between development and staging.

• Create and run a container from an image, with a custom name:

docker run --name <container_name> <image_name>

• Run a container with and publish a container’s port(s) to the host.

docker run -p <host_port>:<container_port> <image_name>

• Run a container in the background (detached mode)

docker run -d <image_name>

• Start or stop an existing container:

docker start|stop <container_name> (or <container-id>)

• Remove a stopped container:

docker rm <container_name>

• Open a shell inside a running container:

docker exec -it <container_name> sh

• Fetch and follow the logs of a container:

docker logs -f <container_name>

• To inspect a running container:

docker inspect <container_name> (or <container_id>)

• To list currently running containers:

docker ps

• List all docker containers (running and stopped):

docker ps --all

• View resource usage stats

docker container stats

Docker Hub Commands

Docker Hub is a service provided by Docker for finding and sharing container images with your team. Learn more and find images at https://hub.docker.com/

• Login into Docker Hub

docker login -u <username>

• Publish an image to Docker Hub

docker push <username>/<image_name>

• Search Hub for an image

docker search <image_name>

• Pull an image from a Docker Hub

docker pull <image_name>