68 lines
2.1 KiB
Markdown
68 lines
2.1 KiB
Markdown
<!--[metadata]>
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+++
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title = "Registry Overview"
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description = "High-level overview of the Registry"
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keywords = ["registry, on-prem, images, tags, repository, distribution"]
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aliases = ["/registry/overview/"]
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[menu.main]
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parent="smn_registry"
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weight=1
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<![end-metadata]-->
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# Docker Registry
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## What it is
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The Registry is a stateless, highly scalable server side application that stores and lets you distribute Docker images.
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The Registry is open-source, under the permissive [Apache license](http://en.wikipedia.org/wiki/Apache_License).
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## Why use it
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You should use the Registry if you want to:
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* tightly control where your images are being stored
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* fully own your images distribution pipeline
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* integrate image storage and distribution tightly into your in-house development workflow
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## Alternatives
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Users looking for a zero maintenance, ready-to-go solution are encouraged to head-over to the [Docker Hub](https://hub.docker.com), which provides a free-to-use, hosted Registry, plus additional features (organization accounts, automated builds, and more).
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Users looking for a commercially supported version of the Registry should look into [Docker Trusted Registry](https://docs.docker.com/docker-trusted-registry/overview/).
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## Requirements
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The Registry is compatible with Docker engine **version 1.6.0 or higher**.
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If you really need to work with older Docker versions, you should look into the [old python registry](https://github.com/docker/docker-registry).
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## TL;DR
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Start your registry
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docker run -d -p 5000:5000 --name registry registry:2
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Pull (or build) some image from the hub
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docker pull ubuntu
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Tag the image so that it points to your registry
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docker tag ubuntu localhost:5000/myfirstimage
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Push it
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docker push localhost:5000/myfirstimage
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Pull it back
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docker pull localhost:5000/myfirstimage
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Now stop your registry and remove all data
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docker stop registry && docker rm -v registry
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## Next
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You should now read the [detailed introduction about the registry](introduction.md), or jump directly to [deployment instructions](deploying.md).
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