cleanup.rb

#!/usr/bin/env ruby
ary = `sudo docker ps -a -q`.split("\n")
ary.each_with_index{|x,i|
  system "sudo docker rm #{x}"
  puts "#{i+1} / #{ary.count}"
}

ary = `sudo docker images | awk '/^<none>/ { print $3 }'`.split("\n")
ary.each_with_index{|x,i|
  system "sudo docker rmi #{x}"
  puts "#{i+1} / #{ary.count}"
}