Common Commands

docker pull ubuntu:17.10

Pull the ubuntu:17.10 image.

docker port CONTAINER

Check current port mapping configuration.

docker inspect NAME|ID

Get detailed information about Docker objects (such as containers, images, volumes, and networks).

docker info

Display detailed Docker system information including version, storage driver, number of images/containers, and other important configuration details.

docker ps

List running containers. Add the -a option to view all containers.

docker images

List local Docker images.

docker commit CONTAINER REPOSITORY[:TAG]

Save the modified image as a new image.

docker export CONTAINER > container.tar

Export the file system of a container as a TAR archive.

docker import image.tar

Create a Docker image from a TAR archive or URL snapshot.

docker save -o image.tar IMAGE

Save one or more Docker images to a TAR archive for distribution or backup.

docker load -i image.tar

Load Docker images from a TAR archive created by docker save.

docker tag SOURCE_IMAGE[:TAG] TARGET_IMAGE[:TAG]

Create an alias (tag) for a local image.

docker cp SRC_PATH CONTAINER:DEST_PATH

docker cp CONTAINER:SRC_PATH DEST_PATH

Copy files or directories between the Docker container and host machine.

docker run -it -d -p 5900:5900 -p 15555-15577:15555-15577 --name mesa0 --privileged -v /root/share:/root/share ubuntu:17.10 /bin/bash

Start a container (example).

-it: runs the container interactively within a pseudo terminal.

-d: runs the container in the background and returns the container ID.

-p: maps container_port to host_port.

--name: assigns a name to the container.

-v: mounts host_dir to container_dir.