Kill all running containers

docker kill $(docker ps -a -q)

Delete all stopped containers

docker rm $(docker ps -a -q)

Delete all untagged (dangling) images

docker rmi $(docker images -q -f dangling=true)

Delete the specified image by image ID

docker rmi <image id>

Delete all images

docker rmi $(docker images -q)

Create aliases for these commands

# ~/.bash_aliases

# 杀死所有正在运行的容器.
alias dockerkill='docker kill $(docker ps -a -q)'

# 删除所有已经停止的容器.
alias dockercleanc='docker rm $(docker ps -a -q)'

# 删除所有未打标签的镜像.
alias dockercleani='docker rmi $(docker images -q -f dangling=true)'

# 删除所有已经停止的容器和未打标签的镜像.
alias dockerclean='dockercleanc || true && dockercleani'