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author description keywords aliases tags license modified modified_by published title external_resources
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Linode
docs@linode.com
A quick reference cheat sheet on Docker commands for installation, containers, images and more.
docker
quick reference
cheat sheet
commands
/applications/containers/docker-quick-reference-cheat-sheet/
container
docker
2018-12-18
name
Linode
2015-03-30
Docker Commands Quick Reference Cheat Sheet
[Docker Cheat Sheet (Github)](https://github.com/wsargent/docker-cheat-sheet)

Docker Commands Quick Reference Cheat Sheet

Docker is becoming increasingly popular among software developers, operators and enterprises as a software container platform. Containers package software in a format that can run isolated on a host operating system. Bundled with only essential libraries and settings, Docker renders lightweight, efficient, self-contained systems that run identically wherever deployed.

Optimizing the platform's functionality begins with mastery of the core Docker commands. This cheat sheet is a reference for the most basic Docker commands that address installation, Hub interaction, and working with containers and images.

As of this writing, the recommended Docker installation is Docker Community Edition (Docker CE). See the official docs or our How to Install Docker guide for more details.

{{< note >}} If you have not added your limited user account to the docker group (with sudo usermod -aG docker username), all of the commands in this cheatsheet will need to be run with sudo. {{< /note >}}

Docker Hub

Docker Syntax Description
docker search searchterm Search Docker Hub for images.
docker pull user/image Downloads an image from Docker Hub.
docker login Authenticate to Docker Hub
(or other Docker registry).
docker push user/image Uploads an image to Docker Hub.
You must be authenticated to run this command.

Image and Container Information

Docker Syntax Description
docker ps List all running containers.
docker ps -a List all container instances, with their ID
and status.
docker images Lists all images on the local machine.
docker history user/image Lists the history of an image.
docker logs [container name or ID] Displays the logs from a running container.
docker port [container name or ID] Displays the exposed port of a running container.
docker diff [container name or ID] Lists the changes made to a container.

Work With Images and Containers

Docker Syntax Description
docker run -it user/image Runs an image, creating a container and
changing the terminal
to the terminal within the container.
docker run -p $HOSTPORT:$CONTAINERPORT -d user/image Run an image in detached mode
with port forwarding.
ctrl+p then ctrl+q From within the container's command prompt,
detach and return to the host's prompt.
docker attach [container name or ID] Changes the command prompt
from the host to a running container.
docker start [container name or ID] Start a container.
docker stop [container name or ID] Stop a container.
docker rm -f [container name or ID] Delete a container.
docker rmi Delete an image.
docker tag user/image:tag user/image:newtag Add a new tag to an image.
docker exec [container name or ID] shell command Executes a command within a running container.

Image Creation

Docker Syntax Description
docker commit user/image Save a container as an image.
docker save user/image Save an image to a tar archive.
docker build -t sampleuser/ubuntu . Builds a Docker image
from a Dockerfile
in the current directory.
docker load Loads an image from file.