#!/bin/sh
if [ "$(xargs --version | grep GNU)" != "" ] ; then
  echo GNU xargs
  export XARGS_ARG="--no-run-if-empty"
else
  echo Not GNU xargs
  export XARGS_ARG=""
fi

echo "Removing exited containers."
docker ps -a | grep Exited | awk '{print $NF}' | xargs $XARGS_ARG docker rm

echo "Removing unused images."
docker images -q --filter "dangling=true" | xargs $XARGS_ARG docker rmi