Delete all none images and then ask the user, for each image:tag, if he wants to delete it

docker_clean_ask.py

#!/usr/bin/env python3

import subprocess

def remove_image(image_id):
    """Safely remove a docker image."""
    try:
        subprocess.run(["docker", "rmi", image_id], check=True, capture_output=True)
        print(f"   ✓  Removed: {image_id}")
    except subprocess.CalledProcessError:
        print(f"   X  Failed to remove: {image_id}")

def get_images():
    """Get lists of all images and dangling images."""
    all_images_output = subprocess.run(
        ["docker", "images", "--format", "{{.Repository}}:{{.Tag}}"],
        capture_output=True,
        text=True,
        check=True
    ).stdout.strip()
    all_images = [
        line for line in all_images_output.splitlines() if "<none>" not in line
    ]

    none_images_output = subprocess.run(
        ["docker", "images", "--filter", "dangling=true", "--format", "{{.ID}}"],
        capture_output=True,
        text=True,
        check=True
    ).stdout.strip()
    none_images = none_images_output.splitlines()

    return all_images, none_images

def main():
    all_images, none_images = get_images()

    if not all_images and not none_images:
        print("No Docker images found to delete.")
        return

    print("------------------------------------------------------")
    print("Found these images:")

    if none_images:
        print("  **  Removing <none> images...")
        for image_id in none_images:
            remove_image(image_id)

    if all_images:
        print("  **  Reviewing other images...")
        for image in all_images:
            response = input(f"  Delete image '{image}'? (y/N): ").strip().lower()
            if response in ("y", "yes"):
                remove_image(image)
            else:
                print(f"   -  Skipped: {image}")

    print("------------------------------------------------------")
    print("Image cleanup finished.")

if __name__ == "__main__":
    main()