Merge pull request #1257 from LinkMJB/docker

Added more recently available docker cleanup commands

aliases/available/docker.aliases.bash

@@ -26,3 +26,8 @@ alias dkideps='docker-image-dependencies'  # Output a graph of image dependencie
 alias dkre='docker-runtime-environment'  # List environmental variables of the supplied image ID
 alias dkelc='docker exec -it `dklcid` bash' # Enter last container (works with Docker 1.3 and above)
 alias dkex='docker exec -it ' # Useful to run any commands into container without leaving host
+
+# Added more recent cleanup options from newer docker versions
+alias dkip=`docker image prune -a -f`
+alias dkvp=`docker volume prune -f`
+alias dksp=`docker system prune -a -f`