Merge pull request #403 from ksclarke/docker

Added Docker aliases and functions

aliases/available/docker.aliases.bash

@@ -0,0 +1,17 @@
+cite 'about-alias'
+about-alias 'docker abbreviations'
+
+alias dklc='docker ps -l'  # List last Docker container
+alias dklcid='docker ps -l -q'  # List last Docker container ID
+alias dklcip="docker inspect `dklcid` | grep IPAddress | cut -d '\"' -f 4"  # Get IP of last Docker container
+alias dkps='docker ps'  # List running Docker containers
+alias dkpsa='docker ps -a'  # List all Docker containers
+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 rmi $(docker images | grep "^<none>" | awk "{print $3}")'  # Delete all untagged Docker images
+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
+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)

plugins/available/docker.plugin.bash

@@ -1,5 +1,5 @@
 cite about-plugin
-about-plugin 'Helpers to get Docker setup correctly for boot2docker'
+about-plugin 'Helpers to get Docker setup correctly for boot2docker and to more easily work with Docker'
 
 # Note, this might need to be different if you have an older version
 # of boot2docker, or its configured for a different IP
@@ -23,3 +23,43 @@ function docker-remove-most-recent-image() {
   group 'docker'
   docker images | head -2 | tail -1 | awk '{print $3}' | xargs docker rmi
 }
+
+function docker-remove-images() {
+  about 'attempt to remove images with supplied tags or all if no tags are supplied'
+  group 'docker'
+  if [ -z "$1" ]; then
+    docker rmi $(docker images -q)
+  else
+    DOCKER_IMAGES=""
+    for IMAGE_ID in $@; do DOCKER_IMAGES="$DOCKER_IMAGES\|$IMAGE_ID"; done
+    # Find the image IDs for the supplied tags
+    ID_ARRAY=($(docker images | grep "${DOCKER_IMAGES:2}" | awk {'print $3'}))
+    # Strip out duplicate IDs before attempting to remove the image(s)
+    docker rmi $(echo ${ID_ARRAY[@]} | tr ' ' '\n' | sort -u | tr '\n' ' ')
+ fi
+}
+
+function docker-image-dependencies() {
+  about 'attempt to create a Graphiz image of the supplied image ID dependencies'
+  group 'docker'
+  if hash dot 2>/dev/null; then
+    OUT=$(mktemp -t docker-viz-XXXX.png)
+    docker images -viz | dot -Tpng > $OUT
+    case $OSTYPE in
+      linux*)
+        xdg-open $OUT
+        ;;
+      darwin*)
+        open $OUT
+        ;;
+    esac
+  else
+    >&2 echo "Can't show dependencies; Graphiz is not installed"
+  fi
+}
+
+function docker-runtime-environment() {
+  about 'attempt to list the environmental variables of the supplied image ID'
+  group 'docker'
+  docker run "$@" env
+}