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50 lines
2.2 KiB
Plaintext
50 lines
2.2 KiB
Plaintext
import Image from 'next/image'
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import {ArticleLayout} from '../../../components/layouts/ArticleLayout'
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import {createSlug} from '../../../lib/createSlug'
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import cargoShipImage from './ian-taylor-jOqJbvo1P9g-unsplash.jpg'
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export const metadata = {
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author: 'Ryan Freeman',
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date: '2023-02-11',
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title: 'Docker cheat sheet',
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description: 'This is a living document of useful commands for maintaining and using Docker, and should function as a handy reference for developers and DevOps engineers.',
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ogImage: '/images/ian-taylor-jOqJbvo1P9g-unsplash.jpg'
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}
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export default (props) => <ArticleLayout
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author={metadata.author}
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date={metadata.date}
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title={metadata.title}
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description={metadata.description}
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ogImage={metadata.ogImage}
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slug={createSlug(metadata.title)}
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{...props} />
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This is a living document of useful commands for maintaining and using Docker, and should function as a handy reference for developers and DevOps engineers.
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<Image
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src={cargoShipImage}
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alt="Image of a cargo ship by Ian Taylor on Unsplash"
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placeholder="blur"
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priority
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/>
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I'll kick off this Docker cheat sheet with cleaning up Docker images, let's get started.
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## Cleaning up Docker images
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If you update your Docker container images regularly using something like [watchtower](https://containrrr.dev/watchtower/), you might have dangling images which are out-of-date and no longer associated with some of your running containers.
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So why not use `docker image prune` to reclaim that valuable disk space. For example, running this command on my Raspberry Pi shaved off about 9.66Gb of disk usage.
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As a bonus, you can save some additional space using `docker image prune --all`, which removes all unused Docker images.
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## Restarting all containers
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Sometimes you want to restart all your containers at once, such as after you've pulled the latest images for your containers.
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To do this, use `docker restart $(docker ps -q)`, this command instructs Docker to restart all containers using the container ids which are returned from `docker ps -q`.
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## Stopping all containers
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Need to stop all containers? Simply use `docker stop $(docker ps -q)`. As above, this uses the container ids from `docker ps` to stop each running container. |