Docker Image Management Commands: Search, Pull, Inspect, Remove, Save & Load
This article explains how to use Docker's image management commands—including search, pull, list, inspect, remove, prune, save, and load—to efficiently handle container images, filter results, and clean up unused resources.
In the world of containers, images are fundamental, and Docker provides powerful commands to manage them.
1. Search Images Use docker search nginx to list repositories from Docker Hub, with options like -f, --filter , --format , --limit , and --no-trunc . Example filtering official images: docker search --filter=is-official=true nginx .
2. Pull Images Download images with docker pull <image_name:tag> . Example: docker pull nginx:1.20 . Options include -a, --all-tags , --disable-content-trust , -q, --quiet .
3. List Image Information View local images using docker images or docker image ls . Options: -a, --all , -f, --filter , --no-trunc . Detailed inspection with docker image inspect <image> .
4. Remove Images Delete images with docker rmi <image:tag> . If an image is in use, Docker will refuse; force removal with -f is discouraged. Use docker image prune -a to clean unused images.
5. Save and Load Images Export an image to a tar archive using docker save -o <file.tar> <image:tag> and import it on another host with docker load -i <file.tar> .
These commands help efficiently manage Docker images, reduce storage waste, and facilitate image transfer between machines.
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