Docker for DevOps Engineers.

Docker is a software platform that allows you to build, test, and deploy applications quickly.
Docker packages software into standardized units called containers that have everything the software needs to run including libraries, system tools, code, and runtime.
Using Docker, you can quickly deploy and scale applications into any environment and know your code will run.

Use the docker run command to start a new container and interact with it through the command line.

command: sudo docker run hello-world
Use the docker inspect command to view detailed information about a container or image.

command: sudo docker inspect [containerID]
Use the docker port command to list the port mappings for a container.

command: sudo docker port [containerID]
Use the docker stats command to view resource usage statistics for one or more containers.

command: sudo docker stats [containerID]
Use the docker top command to view the processes running inside a container.

command: sudo docker top [containerID]
Use the docker save command to save an image to a tar archive.
Use the docker load command to load an image from a tar archive.

docker save: save one or more images to a tar archive (streamed to STDOUT by default)

command: sudo docker save -o [pathtofile.tar] image_name or

sudo docker save image_name > [pathtofile.tar]

docker load: load an image from a tar archive or STDIN

command: sudo docker load -i [pathtofile.tar]

Reference:

Docker document

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