#!/usr/bin/env python
#
# Finds all docker images without the latest tag
#
# Use like:
#  python not-latest-docker.py | while read img; do docker rmi "$img"; done
import subprocess

images = {}

for thing in subprocess.check_output('docker image ls --format "{{.ID}} {{.Tag}}"', shell=True).splitlines():
    image, tag = thing.split(' ')
    if not images.get(image):
        images[image] = []
    images[image].append(tag)

for image, tags in images.items():
    if 'latest' in tags:
        continue

    print image