The docker system prune command can be used to

• Remove all stopped containers
• Remove all Docker networks not being used by any containers
• Remove all images that are not being used by any containers
• Remove all build cache

sudo docker system prune --all

The --volumes flag can be included to remove volumes that are not being used by any containers.

sudo docker system prune --all --volumes

By default, there will be a prompt asking you if you want to proceed. The -f or --force flag can be used to avoid the prompt and go foward with the removal.

sudo docker system prune --all --volumes --force