To delete all containers including docker volumes use the following commands in the cli
docker rm -vf $(docker ps -a -q)
To delete all the images
docker rmi $(docker images -a -q)
Prune all docker images
docker system prune -a
Stop and remove all docker images
docker stop `docker ps --no-trunc -aq` && docker rm `docker ps --no-trunc -aq`
Create a docker MySql database dump
docker exec/usr/bin/mysqldump -u --password= > backup.sql
Drop all tables in a docker mySql database dump
docker exec/usr/bin/mysqldump -u -p --add-drop-table --no-data | grep ^DROP | mysql -u -p