# Nexus Container Registry

Sonatype Nexus Repository Manager offers three types of Docker registry;
- Group
- Hosted
- Proxy

This guide will focus on adding a `Hosted` Docker registry as an External Octopus Feed.

:::div{.info}

This guide was written using Nexus OSS version 3.37.0-01
:::

## Configuring a Nexus Hosted Docker Registry

From the Nexus web portal, click on the **gear icon** to get to the **Administration** screen.

:::figure
![Administration gear Icon](/docs/img/packaging-applications/package-repositories/guides/images/nexus-nuget-administration.png)
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Click on **Repositories**

:::figure
![Repositories](/docs/img/packaging-applications/package-repositories/guides/images/nexus-repositories.png)
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Click **Create repository**

:::figure
![Create repository](/docs/img/packaging-applications/package-repositories/guides/images/nexus-create-repository.png)
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Choose **Docker (hosted)** from the list of repositories to create

:::figure
![Docker hosted](/docs/img/packaging-applications/package-repositories/guides/container-registries/images/nexus-create-docker-repository.png)
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Give the repository a name and change any applicable configuration options.  When using HTTPS, a Nexus Docker repository will listen on the specified port.

Click **Create repository** when you are done.

:::figure
![Create Nexus Docker repository](/docs/img/packaging-applications/package-repositories/guides/container-registries/images/nexus-docker-repository.png)
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When the repository has been created, click on the entry in the list to bring up the repository properties.

Optionally push a container to the feed to make sure the feed works when added to Octopus Deploy.

## Adding an Nexus Docker repository as an Octopus External Feed
Create a new Octopus Feed by navigating to **Deploy ➜ Manage ➜ External Feeds** and select the `Docker Container Registry` Feed type. 

Give the feed a name, in the URL field, paste the URL to your Nexus server with the associated port. It should look similar to this format:

`https://your.nexus.url:[repository port]`

:::figure
![Nexus NuGet feed](/docs/img/packaging-applications/package-repositories/guides/container-registries/images/nexus-docker-feed.png)
:::

Optionally add Credentials if they are required.