Cleaning up containers or images

Obsolete containers or images occupy space, you might want to clean up images or containers from the host to clean up space or to install and run new ones. Docker provides the following options for cleanup:

• docker stop: docker stop can be used to stop a running container. A container cannot be removed unless it is in the stopped state. You can use the -f or -force option to force stop a container:

docker stop [container id/name] -f
docker stop $(docker ps -a -q) # stops all the containers

• docker rm: docker rm can be used to remove a stopped container. docker rm can be concatenated with other listing commands for a consolidated operation as follows:

docker rm [container id/name] -force #removes
       container by id or name
docker rm $(docker ps -a -q) #deletes all stopped
       containers

• docker rmi: docker rmi can be used to remove an image from the container host using the image id, name, tag, or digest value. If an image has multiple tags all the tagged images...