Add moar docker awesomeness thanks to @thbkrkr/dotfiles

bin/docker-cleanup.sh

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+#!/bin/bash -u
+#
+# Clean Docker containers and images.
+#
+# This script assumes that the docker images are tagged with a version (like a git sha1) and 'latest'.
+#
+# WARNING: only 'latest' Docker images for the given repo are kept after a cleanup!
+#
+# Example of how to tag a Docker image with a version and 'latest':
+#   $ docker build --rm -t $REPO/$NAME:$VERSION .
+#   $ docker tag -f $REPO/$NAME:$VERSION $(ORG)/$NAME:latest
+#
+
+# The repo to use to filter images to delete
+REPO=$1
+
+# Utils functions
+countContainers()       { docker ps -aq | wc -l; }
+listStoppedContainers() { docker ps -a  | grep Exit | awk '{print $1}'; }
+countmages()            { docker images | egrep -c "($REPO|none)"; }
+listNotLatestImages()   { docker images | grep $REPO | grep -v latest | awk '{printf "%s:%s\n", $1, $2}'; }
+listUntaggedImages()    { docker images -q -f dangling=true; }
+log() { echo "[$(date +"%Y-%m-%dT%H:%M:%SZ")][docker-cleanup] $1"; }
+
+totalContainers=$(countContainers)
+totalImages=$(countmages)
+log "Total containers: $totalContainers"
+log "Total images: $totalImages"
+
+#  Delete all stopped containers
+containerIds=$(listStoppedContainers)
+if [[ "$containerIds" != "" ]]; then
+    log "Remove stopped containers..."
+    docker rm $containerIds
+fi
+
+# Delete not latest images
+oldImages=$(listNotLatestImages)
+if [[ "$oldImages" != "" ]]; then
+    log "Remove not latest images..."
+    docker rmi -f $oldImages
+fi
+
+# Delete all untagged images
+untaggedImages=$(listUntaggedImages)
+if [[ "$untaggedImages" != "" ]]; then
+    log "Remove untagged images..."
+    docker rmi $untaggedImages
+fi
+
+newTotalContainers=$(countContainers)
+newTotalImages=$(countmages)
+
+log "---"
+log "Containers deleted: $(expr $totalContainers - $newTotalContainers)"
+log "Images deleted: $(expr $totalImages - $newTotalImages)"
+log "---"
+log "Total containers: $newTotalContainers"
+log "Total images: $newTotalImages"