docker-compose: add --rmi all --volumes (#3498)

add "--rmi all --volumes" parameters to docker-compose down command, in order to match with description (by default, docker-compose didn't remove volumes).

pages/common/docker-compose.md

@@ -25,7 +25,7 @@
 
 - Stop and remove all containers, networks, images, and volumes:
 
-`docker-compose down`
+`docker-compose down --rmi all --volumes`
 
 - Follow logs for all containers: