Answers for "docker how to kill all containers"

stop all container in docker

docker stop $(docker ps -a -q)
docker rm $(docker ps -a -q)

docker stop all containers

docker stop $(docker ps -a -q)

stop all docker containers

docker kill $(docker ps -q)

docker kill all containers windows

You could create a batch-file (.bat or .cmd) with these commands in it:
@ECHO OFF
FOR /f "tokens=*" %%i IN ('docker ps -q') DO docker stop %%i

If you want to run this command directly in the console, replace %%i with %i, like:
FOR /f "tokens=*" %i IN ('docker ps -q') DO docker stop %i

In Git Bash or Bash for Windows you can use this Linux command:
docker stop $(docker ps -q)

For PowerShell, the command is very similar to the Linux one:
docker ps -q | % { docker stop $_ }