docker-clean

#!/bin/sh
#
# Copyright (c) 2017-2019 Gaël PORTAY
#
# SPDX-License-Identifier: MIT
#

set -e

usage() {
	cat <<EOF
Usage: ${0##*/} [OPTIONS] [--] [DOCKER_RM_RMI_EXTRA_ARGUMENTS]

Remove exited containers and dangling images.

Options:
      -E or --no-exited         Do not remove exited containers.
      -D or --no-dangling       Do not remove dangling images.
      -c or --created           Remove created containers.
            --running           Remove running containers.
            --all               Remove all containers except running.
                                ie. exited, dangling, and created.
      -h or --help              Print usage.
EOF
}

exited=true
dangling=true
created=false
running=false
while [ "$#" -ne 0 ]; do
	if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
		usage
		exit 0
	elif [ "$1" = "-E" ] || [ "$1" = "--no-exited" ]; then
		exited=false
	elif [ "$1" = "-D" ] || [ "$1" = "--no-dangling" ]; then
		dangling=false
	elif [ "$1" = "-c" ] || [ "$1" = "--created" ]; then
		created=true
	elif [ "$1" = "--running" ]; then
		running=true
	elif [ "$1" = "--all" ]; then
		exited=true
		dangling=true
		created=true
	elif [ "$1" = "--" ]; then
		shift
		break
	else
		usage
		echo "$1: Invalid argument!" >&2
		exit 1
	fi
	shift
done

# Remove exited containers
if $exited; then
	docker ps --quiet --all --filter "status=exited" | \
	while read -r id; do docker rm  "$id" "$@"; done
fi

# Remove dangling images
if $dangling; then
	docker images --quiet --filter "dangling=true" | \
	while read -r id; do docker rmi "$id" "$@"; done
fi

# Remove created containers
if $created; then
	docker ps --quiet --all --filter "status=created" | \
	while read -r id; do docker rm  "$id" "$@"; done
fi

# Remove running containers
if $running; then
	docker ps --quiet --all --filter "status=running" | \
	while read -r id; do docker rm  "$id" "$@" --force; done
fi