Add plugin and alias for cleaning docker assets

aliases/available/docker.aliases.bash

@@ -10,6 +10,7 @@ alias dki='docker images'  # List Docker images
 alias dkrmac='docker rm $(docker ps -a -q)'  # Delete all Docker containers
 alias dkrmlc='docker-remove-most-recent-container'  # Delete most recent (i.e., last) Docker container
 alias dkrmui='docker images -q -f dangling=true |xargs -r docker rmi'  # Delete all untagged Docker images
+alias dkrmall='docker-remove-stale-assets'  # Delete all untagged images and exited containers
 alias dkrmli='docker-remove-most-recent-image'  # Delete most recent (i.e., last) Docker image
 alias dkrmi='docker-remove-images'  # Delete images for supplied IDs or all if no IDs are passed as arguments
 alias dkideps='docker-image-dependencies'  # Output a graph of image dependencies using Graphiz

plugins/available/docker.plugin.bash

@@ -13,6 +13,13 @@ function docker-remove-most-recent-image() {
   docker images | head -2 | tail -1 | awk '{print $3}' | xargs docker rmi
 }
 
+function docker-remove-stale-assets() {
+  about 'attempt to remove exited containers and dangling images'
+  group 'docker'
+  docker ps --filter status=exited -q | xargs docker rm --volumes
+  docker images --filter dangling=true -q | xargs docker rmi
+}
+
 function docker-enter() {
   about 'enter the specified docker container using bash'
   group 'docker'