Docker

Empowering App Development for Developers | DockerDocker

Image = application + dependencies

Containers - An instance based on an image that runs on a "Docker Host"

Lifecycle Commands

• Create a container (without starting it):

docker create [IMAGE]

• Rename an existing container

docker rename [CONTAINER_NAME] [NEW_CONTAINER_NAME]

• Run a command in a new container

docker run [IMAGE] [COMMAND]

-d - detached application will run in background and will not show any console output

-p - publish port <host>:<container>

--name - optional

-v - mount a volume

--link - communicate between containers

• Remove container after it exits

docker run --rm [IMAGE]

• Start a container and keep it running

docker run -td [IMAGE]

• Start a container and creates an interactive bash shell in the container

docker run -it [IMAGE]

• Create, Start, and run a command inside the container and remove the container after executing command.

docker run -it-rm [IMAGE]

• Execute command inside already running container.

docker exec -it [container]

• Delete a container (if it is not running)

docker rm [CONTAINER]

• Update the configuration of the container

docker update [CONTAINER]

Starting and Stopping Containers

• Start Container

docker start [CONTAINER]

• Stop running Container

docker stop [CONTAINER]

• Stop running Container and start it again

docker restart [CONTAINER]

• Pause processes in a running container

docker pause [CONTAINER]

• Unpause processes in a running container

docker unpause [CONTAINER]

• Block a container until others stop

docker wait [CONTAINER]

• Kill a container by sending a SIGKILL to a running container

docker kill [CONTAINER]

• Attach local standard input, output, and error streams to a running container

docker attach [CONTAINER]

Docker Image Commands

• Create an image from a tarball

docker import [URL/FILE]

• Create an image from a container

docker commit [CONTAINER] [NEW_IMAGE_NAME]

• Load an image from a tar archive or stdin

docker load [TAR_FILE/STDIN_FILE]

• Save an image to a tar archive

docker save [IMAGE] > [TAR_FILE]

Docker Container And Image Information

• List real-time events from a container

docker events [CONTAINER]

• Show port mapping for a container

docker port [CONTAINER]

• Show running processes in a container

docker top [CONTAINER]

• Show live resource usage statistics of container

docker stats [CONTAINER]

• Show changes to files (or directories) on a filesystem

docker diff [CONTAINER]

• List all images that are locally stored with the docker engine

docker [image] ls

• Show the history of an image

docker history [IMAGE]

Network Commands

• List networks

docker network ls

• Remove one or more networks

docker network rm [NETWORK]

• Show information on one or more networks

docker network inspect [NETWORK]

• Connects a container to a network

docker network connect [NETWORK] [CONTAINER]

• Disconnect a container from a network

docker network disconnect [NETWORK] [CONTAINER]