Docker Cheat Sheet

Container Management

Command	Description
`docker run [options] IMAGE`	Create and start a new container
`docker start CONTAINER`	Start a stopped container
`docker stop CONTAINER`	Stop a running container
`docker restart CONTAINER`	Restart a container
`docker pause CONTAINER`	Pause a running container
`docker unpause CONTAINER`	Unpause a paused container
`docker rm CONTAINER`	Remove a stopped container
`docker exec [options] CONTAINER COMMAND`	Run a command in a running container

`docker run` options

-d --detach - Run container in background and print container ID
-e --env - Set environment variables
-i --interactive - Keep STDIN open even if not attached
-p --publish - Publish a container's port(s) to the host (format: -p HOST:CONTAINER)
-t --tty - Allocate a pseudo-TTY (teletype)
-v --volume - Bind mount a volume (format: -v HOST:CONTAINER)

Image Management

Command	Description
`docker build [options] PATH`	Build an image from a Dockerfile
`docker pull IMAGE`	Pull an image from a registry
`docker push IMAGE`	Push an image to a registry
`docker images`	List local images
`docker rmi IMAGE`	Remove an image
`docker tag SOURCE_IMAGE[:TAG] TARGET_IMAGE[:TAG]`	Create a tag for an image

Container Inspection

Command	Description
`docker ps`	List running containers
`docker ps -a`	List all containers (including stopped)
`docker logs CONTAINER`	View container logs
`docker inspect CONTAINER`	Display detailed information about a container
`docker top CONTAINER`	Display running processes of a container
`docker stats CONTAINER`	Display a live stream of container resource usage statistics

Image Inspection

Command	Description
`docker history IMAGE`	Show the history of an image
`docker inspect IMAGE`	Display detailed information about an image

Network Management

Command	Description
`docker network create NETWORK`	Create a network
`docker network ls`	List networks
`docker network inspect NETWORK`	Display detailed information about a network
`docker network connect NETWORK CONTAINER`	Connect a container to a network
`docker network disconnect NETWORK CONTAINER`	Disconnect a container from a network

Volume Management

Command	Description
`docker volume create VOLUME`	Create a volume
`docker volume ls`	List volumes
`docker volume inspect VOLUME`	Display detailed information about a volume
`docker volume rm VOLUME`	Remove a volume

System Management

Command	Description
`docker info`	Display system-wide information
`docker version`	Show the Docker version information
`docker system prune`	Remove unused data
`docker system df`	Show docker disk usage

Docker Compose

Command	Description
`docker-compose up`	Create and start containers
`docker-compose down`	Stop and remove containers, networks, images, and volumes
`docker-compose ps`	List containers
`docker-compose logs`	View output from containers
`docker-compose build`	Build or rebuild services

Docker Hub

Command	Description
`docker login`	Log in to a Docker registry
`docker logout`	Log out from a Docker registry
`docker search TERM`	Search Docker Hub for images

Dockerfile

Base Image & Environment Setup

Instruction	Description
`FROM <image>:<tag>`	Set the base image for subsequent instructions
`ARG <name>[=<default>]`	Define a build-time variable
`ENV <key>=<value>`	Set an environment variable

Working Directory

Instruction	Description
`WORKDIR <path>`	Set the working directory for subsequent instructions

File Manipulation

Instruction	Description
`COPY <src> <dest>`	Copy files or directories from the build context to the container
`ADD <src> <dest>`	Copy files or directories from the build context to the container (supports URLs and unpacking archives)

Running Commands

Instruction	Description
`RUN <command>`	Execute a command in a new layer on top of the current image and commit the results

Exposing Ports

Instruction	Description
`EXPOSE <port>`	Expose a port to the network

Volumes

Instruction	Description
`VOLUME ["/path"]`	Create a mount point with the specified name and mark it as holding externally mounted volumes from native host or other containers

User

Instruction	Description
`USER <user>`	Set the user name or UID to use when running the image

Labels & Metadata

Instruction	Description
`LABEL <key>=<value>`	Add metadata to an image

Health Checks

Instruction	Description
`HEALTHCHECK [options] CMD command`	Set a command to run to check the health of a container

Entrypoint & Runtime Configuration

Instruction	Description
`ENTRYPOINT ["executable", "param1", "param2"]`	Set the primary command to be run when the container starts
`CMD ["executable", "param1", "param2"]`	Provide defaults for an executing container