Remove All Images & Containers

Some helpful commands to clear down old Docker containers/images.

Update
As of 1.13.0, see the new prune commands:

# Commands
docker container prune # Remove all stopped containers
docker volume prune # Remove all unused volumes
docker image prune # Remove unused images
docker system prune # All of the above, in this order: containers, volumes, images

Extra: 

docker system df # Show docker disk usage, including space reclaimable by pruning

Using Powershell (windows)

Remove all containers:

docker ps -a -q | % { docker rm $_ }

Remove all images:

docker images -q | % { docker rmi $_ }

From bash (Linux type systems)

Remove all containers:

docker rm $(docker ps -a -q)

Remove all images:

docker rmi $(docker images -q)

Remove all volumes: 

docker volume rm $(docker volume ls -f dangling=true -q)