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authorGitLab Bot <gitlab-bot@gitlab.com>2019-09-17 12:06:48 +0000
committerGitLab Bot <gitlab-bot@gitlab.com>2019-09-17 12:06:48 +0000
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tree3f955a56c2ac90497863da26902a42dba49f3466 /doc/user/packages
parente567b4c2df7dc4085d213db029eff6b6fcde0152 (diff)
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diff --git a/doc/user/packages/container_registry/index.md b/doc/user/packages/container_registry/index.md
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+# GitLab Container Registry
+
+> - [Introduced](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/4040) in GitLab 8.8.
+> - Docker Registry manifest `v1` support was added in GitLab 8.9 to support Docker
+> versions earlier than 1.10.
+> - Starting from GitLab 8.12, if you have 2FA enabled in your account, you need
+> to pass a [personal access token](../../profile/personal_access_tokens.md) instead of your password in order to
+> login to GitLab's Container Registry.
+> - Multiple level image names support was added in GitLab 9.1.
+
+NOTE: **Note:**
+This document is the user guide. To learn how to enable GitLab Container
+Registry across your GitLab instance, visit the
+[administrator documentation](../../../administration/packages/container_registry.md).
+
+With the Docker Container Registry integrated into GitLab, every project can
+have its own space to store its Docker images.
+
+You can read more about Docker Registry at <https://docs.docker.com/registry/introduction/>.
+
+## Enable the Container Registry for your project
+
+If you cannot find the **Packages > Container Registry** entry under your
+project's sidebar, it is not enabled in your GitLab instance. Ask your
+administrator to enable GitLab Container Registry following the
+[administration documentation](../../../administration/packages/container_registry.md).
+
+If you are using GitLab.com, this is enabled by default so you can start using
+the Registry immediately. Currently there is a soft (10GB) size restriction for
+Registry on GitLab.com, as part of the [repository size limit](../../project/repository/index.md).
+
+Once enabled for your GitLab instance, to enable Container Registry for your
+project:
+
+1. Go to your project's **Settings > General** page.
+1. Expand the **Visibility, project features, permissions** section
+ and enable the **Container Registry** feature on your project. For new
+ projects this might be enabled by default. For existing projects
+ (prior GitLab 8.8), you will have to explicitly enable it.
+1. Press **Save changes** for the changes to take effect. You should now be able
+ to see the **Packages > Container Registry** link in the sidebar.
+
+## Build and push images
+
+> **Notes:**
+>
+> - Moving or renaming existing container registry repositories is not supported
+> once you have pushed images because the images are signed, and the
+> signature includes the repository name.
+> - To move or rename a repository with a container registry you will have to
+> delete all existing images.
+
+If you visit the **Packages > Container Registry** link under your project's
+menu, you can see the explicit instructions to login to the Container Registry
+using your GitLab credentials.
+
+For example if the Registry's URL is `registry.example.com`, then you should be
+able to login with:
+
+```sh
+docker login registry.example.com
+```
+
+Building and publishing images should be a straightforward process. Just make
+sure that you are using the Registry URL with the namespace and project name
+that is hosted on GitLab:
+
+```sh
+docker build -t registry.example.com/group/project/image .
+docker push registry.example.com/group/project/image
+```
+
+Your image will be named after the following scheme:
+
+```text
+<registry URL>/<namespace>/<project>/<image>
+```
+
+GitLab supports up to three levels of image repository names.
+
+Following examples of image tags are valid:
+
+```text
+registry.example.com/group/project:some-tag
+registry.example.com/group/project/image:latest
+registry.example.com/group/project/my/image:rc1
+```
+
+## Use images from GitLab Container Registry
+
+To download and run a container from images hosted in GitLab Container Registry,
+use `docker run`:
+
+```sh
+docker run [options] registry.example.com/group/project/image [arguments]
+```
+
+For more information on running Docker containers, visit the
+[Docker documentation](https://docs.docker.com/engine/userguide/intro/).
+
+## Control Container Registry from within GitLab
+
+GitLab offers a simple Container Registry management panel. Go to your project
+and click **Packages > Container Registry** in the project menu.
+
+This view will show you all tags in your project and will easily allow you to
+delete them.
+
+## Build and push images using GitLab CI
+
+NOTE: **Note:**
+This feature requires GitLab 8.8 and GitLab Runner 1.2.
+
+Make sure that your GitLab Runner is configured to allow building Docker images by
+following the [Using Docker Build](../../../ci/docker/using_docker_build.md)
+and [Using the GitLab Container Registry documentation](../../../ci/docker/using_docker_build.md#using-the-gitlab-container-registry).
+Alternatively, you can [build images with Kaniko](../../../ci/docker/using_kaniko.md) if the Docker builds are not an option for you.
+
+## Using with private projects
+
+> Personal Access tokens were [introduced](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/11845) in GitLab 9.3.
+> Project Deploy Tokens were [introduced](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/17894) in GitLab 10.7
+
+If a project is private, credentials will need to be provided for authorization.
+There are two ways to do this:
+
+- By using a [personal access token](../../profile/personal_access_tokens.md).
+- By using a [deploy token](../../project/deploy_tokens/index.md).
+
+The minimal scope needed for both of them is `read_registry`.
+
+Example of using a token:
+
+```sh
+docker login registry.example.com -u <username> -p <token>
+```
+
+## Troubleshooting the GitLab Container Registry
+
+### Docker connection error
+
+A Docker connection error can occur when there are special characters in either the group,
+project or branch name. Special characters can include:
+
+- Leading underscore
+- Trailing hyphen/dash
+- Double hyphen/dash
+
+To get around this, you can [change the group path](../../group/index.md#changing-a-groups-path),
+[change the project path](../../project/settings/index.md#renaming-a-repository) or change the branch
+name.
+
+### Troubleshoot as a GitLab server admin
+
+Troubleshooting the GitLab Container Registry, most of the times, requires
+administration access to the GitLab server.
+
+[Read how to troubleshoot the Container Registry](../../../administration/packages/container_registry.md#troubleshooting).
diff --git a/doc/user/packages/dependency_proxy/img/group_dependency_proxy.png b/doc/user/packages/dependency_proxy/img/group_dependency_proxy.png
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diff --git a/doc/user/packages/dependency_proxy/index.md b/doc/user/packages/dependency_proxy/index.md
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+# Dependency Proxy **(PREMIUM)**
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/issues/7934) in [GitLab Premium](https://about.gitlab.com/pricing/) 11.11.
+
+NOTE: **Note:**
+This is the user guide. In order to use the dependency proxy, an administrator
+must first [configure it](../../../administration/packages/dependency_proxy.md).
+
+For many organizations, it is desirable to have a local proxy for frequently used
+upstream images/packages. In the case of CI/CD, the proxy is responsible for
+receiving a request and returning the upstream image from a registry, acting
+as a pull-through cache.
+
+The dependency proxy is available in the group level. To access it, navigate to
+a group's **Overview > Dependency Proxy**.
+
+![Dependency Proxy group page](img/group_dependency_proxy.png)
+
+## Supported dependency proxies
+
+NOTE: **Note:**
+For a list of the upcoming additions to the proxies, visit the
+[direction page](https://about.gitlab.com/direction/package/dependency_proxy/#top-vision-items).
+
+The following dependency proxies are supported.
+
+| Dependency proxy | GitLab version |
+| ---------------- | -------------- |
+| Docker | 11.11+ |
+
+## Using the Docker dependency proxy
+
+With the Docker dependency proxy, you can use GitLab as a source for a Docker image.
+To get a Docker image into the dependency proxy:
+
+1. Find the proxy URL on your group's page under **Overview > Dependency Proxy**,
+ for example `gitlab.com/groupname/dependency_proxy/containers`.
+1. Trigger GitLab to pull the Docker image you want (e.g., `alpine:latest` or
+ `linuxserver/nextcloud:latest`) and store it in the proxy storage by using
+ one of the following ways:
+
+ - Manually pulling the Docker image:
+
+ ```bash
+ docker pull gitlab.com/groupname/dependency_proxy/containers/alpine:latest
+ ```
+
+ - From a `Dockerfile`:
+
+ ```bash
+ FROM gitlab.com/groupname/dependency_proxy/containers/alpine:latest
+ ```
+
+ - In [`.gitlab-ci.yml`](../../../ci/yaml/README.md#image):
+
+ ```bash
+ image: gitlab.com/groupname/dependency_proxy/containers/alpine:latest
+ ```
+
+GitLab will then pull the Docker image from Docker Hub and will cache the blobs
+on the GitLab server. The next time you pull the same image, it will get the latest
+information about the image from Docker Hub but will serve the existing blobs
+from GitLab.
+
+The blobs are kept forever, and there is no hard limit on how much data can be
+stored.
+
+## Limitations
+
+The following limitations apply:
+
+- Only public groups are supported (authentication is not supported yet).
+- Only Docker Hub is supported.
+- This feature requires Docker Hub being available.
diff --git a/doc/user/packages/index.md b/doc/user/packages/index.md
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+# GitLab Package Registry
+
+GitLab Packages allows organizations to utilize GitLab as a private repository
+for a variety of common package managers. Users are able to build and publish
+packages, which can be easily consumed as a dependency in downstream projects.
+
+The Packages feature allows GitLab to act as a repository for the following:
+
+| Software repository | Description | Available in GitLab version |
+| ------------------- | ----------- | --------------------------- |
+| [Container Registry](container_registry/index.md) | The GitLab Container Registry enables every project in GitLab to have its own space to store [Docker](https://www.docker.com/) images. | 8.8+ |
+| [Dependency Proxy](dependency_proxy/index.md) **(PREMIUM)** | The GitLab Dependency Proxy sets up a local proxy for frequently used upstream images/packages. | 11.11+ |
+| [Maven Repository](maven_repository/index.md) **(PREMIUM)** | The GitLab Maven Repository enables every project in GitLab to have its own space to store [Maven](https://maven.apache.org/) packages. | 11.3+ |
+| [NPM Registry](npm_registry/index.md) **(PREMIUM)** | The GitLab NPM Registry enables every project in GitLab to have its own space to store [NPM](https://www.npmjs.com/) packages. | 11.7+ |
+
+TIP: **Tip:**
+Don't you see your package management system supported yet? Consider contributing
+to GitLab. This [development documentation](../../development/packages.md) will
+guide you through the process.
diff --git a/doc/user/packages/maven_repository/img/maven_package_view.png b/doc/user/packages/maven_repository/img/maven_package_view.png
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+# GitLab Maven Repository **(PREMIUM)**
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/issues/5811) in [GitLab Premium](https://about.gitlab.com/pricing/) 11.3.
+
+With the GitLab [Maven](https://maven.apache.org) Repository, every
+project can have its own space to store its Maven artifacts.
+
+![GitLab Maven Repository](img/maven_package_view.png)
+
+## Enabling the Maven Repository
+
+NOTE: **Note:**
+This option is available only if your GitLab administrator has
+[enabled support for the Maven repository](../../../administration/packages/index.md).**(PREMIUM ONLY)**
+
+After the Packages feature is enabled, the Maven Repository will be available for
+all new projects by default. To enable it for existing projects, or if you want
+to disable it:
+
+1. Navigate to your project's **Settings > General > Permissions**.
+1. Find the Packages feature and enable or disable it.
+1. Click on **Save changes** for the changes to take effect.
+
+You should then be able to see the **Packages** section on the left sidebar.
+Next, you must configure your project to authorize with the GitLab Maven
+repository.
+
+## Authenticating to the GitLab Maven Repository
+
+If a project is private or you want to upload Maven artifacts to GitLab,
+credentials will need to be provided for authorization. Support is available for
+[personal access tokens](#authenticating-with-a-personal-access-token) and
+[CI job tokens](#authenticating-with-a-ci-job-token) only.
+[Deploy tokens](../../project/deploy_tokens/index.md) and regular username/password
+credentials do not work.
+
+### Authenticating with a personal access token
+
+To authenticate with a [personal access token](../../profile/personal_access_tokens.md),
+add a corresponding section to your
+[`settings.xml`](https://maven.apache.org/settings.html) file:
+
+```xml
+<settings>
+ <servers>
+ <server>
+ <id>gitlab-maven</id>
+ <configuration>
+ <httpHeaders>
+ <property>
+ <name>Private-Token</name>
+ <value>REPLACE_WITH_YOUR_PERSONAL_ACCESS_TOKEN</value>
+ </property>
+ </httpHeaders>
+ </configuration>
+ </server>
+ </servers>
+</settings>
+```
+
+You should now be able to upload Maven artifacts to your project.
+
+### Authenticating with a CI job token
+
+If you're using Maven with GitLab CI/CD, a CI job token can be used instead
+of a personal access token.
+
+To authenticate with a CI job token, add a corresponding section to your
+[`settings.xml`](https://maven.apache.org/settings.html) file:
+
+```xml
+<settings>
+ <servers>
+ <server>
+ <id>gitlab-maven</id>
+ <configuration>
+ <httpHeaders>
+ <property>
+ <name>Job-Token</name>
+ <value>${env.CI_JOB_TOKEN}</value>
+ </property>
+ </httpHeaders>
+ </configuration>
+ </server>
+ </servers>
+</settings>
+```
+
+You can read more on
+[how to create Maven packages using GitLab CI/CD](#creating-maven-packages-with-gitlab-cicd).
+
+## Configuring your project to use the GitLab Maven repository URL
+
+To download and upload packages from GitLab, you need a `repository` and
+`distributionManagement` section in your `pom.xml` file.
+
+Depending on your workflow and the amount of Maven packages you have, there are
+3 ways you can configure your project to use the GitLab endpoint for Maven packages:
+
+- **Project level**: Useful when you have few Maven packages which are not under
+ the same GitLab group.
+- **Group level**: Useful when you have many Maven packages under the same GitLab
+ group.
+- **Instance level**: Useful when you have many Maven packages under different
+ GitLab groups or on their own namespace.
+
+NOTE: **Note:**
+In all cases, you need a project specific URL for uploading a package in
+the `distributionManagement` section.
+
+### Project level Maven endpoint
+
+The example below shows how the relevant `repository` section of your `pom.xml`
+would look like:
+
+```xml
+<repositories>
+ <repository>
+ <id>gitlab-maven</id>
+ <url>https://gitlab.com/api/v4/projects/PROJECT_ID/packages/maven</url>
+ </repository>
+</repositories>
+<distributionManagement>
+ <repository>
+ <id>gitlab-maven</id>
+ <url>https://gitlab.com/api/v4/projects/PROJECT_ID/packages/maven</url>
+ </repository>
+ <snapshotRepository>
+ <id>gitlab-maven</id>
+ <url>https://gitlab.com/api/v4/projects/PROJECT_ID/packages/maven</url>
+ </snapshotRepository>
+</distributionManagement>
+```
+
+The `id` must be the same with what you
+[defined in `settings.xml`](#authenticating-to-the-gitlab-maven-repository).
+
+Replace `PROJECT_ID` with your project ID which can be found on the home page
+of your project.
+
+If you have a self-hosted GitLab installation, replace `gitlab.com` with your
+domain name.
+
+NOTE: **Note:**
+For retrieving artifacts, you can use either the
+[URL encoded](../../../api/README.md#namespaced-path-encoding) path of the project
+(e.g., `group%2Fproject`) or the project's ID (e.g., `42`). However, only the
+project's ID can be used for uploading.
+
+### Group level Maven endpoint
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/8798) in GitLab Premium 11.7.
+
+If you rely on many packages, it might be inefficient to include the `repository` section
+with a unique URL for each package. Instead, you can use the group level endpoint for
+all your Maven packages stored within one GitLab group. Only packages you have access to
+will be available for download.
+
+The group level endpoint works with any package names, which means the you
+have the flexibility of naming compared to [instance level endpoint](#instance-level-maven-endpoint).
+However, GitLab will not guarantee the uniqueness of the package names within
+the group. You can have two projects with the same package name and package
+version. As a result, GitLab will serve whichever one is more recent.
+
+The example below shows how the relevant `repository` section of your `pom.xml`
+would look like. You still need a project specific URL for uploading a package in
+the `distributionManagement` section:
+
+```xml
+<repositories>
+ <repository>
+ <id>gitlab-maven</id>
+ <url>https://gitlab.com/api/v4/groups/my-group/-/packages/maven</url>
+ </repository>
+</repositories>
+<distributionManagement>
+ <repository>
+ <id>gitlab-maven</id>
+ <url>https://gitlab.com/api/v4/projects/PROJECT_ID/packages/maven</url>
+ </repository>
+ <snapshotRepository>
+ <id>gitlab-maven</id>
+ <url>https://gitlab.com/api/v4/projects/PROJECT_ID/packages/maven</url>
+ </snapshotRepository>
+</distributionManagement>
+```
+
+The `id` must be the same with what you
+[defined in `settings.xml`](#authenticating-to-the-gitlab-maven-repository).
+
+Replace `my-group` with your group name and `PROJECT_ID` with your project ID
+which can be found on the home page of your project.
+
+If you have a self-hosted GitLab installation, replace `gitlab.com` with your
+domain name.
+
+NOTE: **Note:**
+For retrieving artifacts, you can use either the
+[URL encoded](../../../api/README.md#namespaced-path-encoding) path of the group
+(e.g., `group%2Fsubgroup`) or the group's ID (e.g., `12`).
+
+### Instance level Maven endpoint
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/8274) in GitLab Premium 11.7.
+
+If you rely on many packages, it might be inefficient to include the `repository` section
+with a unique URL for each package. Instead, you can use the instance level endpoint for
+all maven packages stored in GitLab and the packages you have access to will be available
+for download.
+
+Note that **only packages that have the same path as the project** are exposed via
+the instance level endpoint.
+
+| Project | Package | Instance level endpoint available |
+| ------- | ------- | --------------------------------- |
+| `foo/bar` | `foo/bar/1.0-SNAPSHOT` | Yes |
+| `gitlab-org/gitlab-ce` | `foo/bar/1.0-SNAPSHOT` | No |
+| `gitlab-org/gitlab-ce` | `gitlab-org/gitlab-ce/1.0-SNAPSHOT` | Yes |
+
+The example below shows how the relevant `repository` section of your `pom.xml`
+would look like. You still need a project specific URL for uploading a package in
+the `distributionManagement` section:
+
+```xml
+<repositories>
+ <repository>
+ <id>gitlab-maven</id>
+ <url>https://gitlab.com/api/v4/packages/maven</url>
+ </repository>
+</repositories>
+<distributionManagement>
+ <repository>
+ <id>gitlab-maven</id>
+ <url>https://gitlab.com/api/v4/projects/PROJECT_ID/packages/maven</url>
+ </repository>
+ <snapshotRepository>
+ <id>gitlab-maven</id>
+ <url>https://gitlab.com/api/v4/projects/PROJECT_ID/packages/maven</url>
+ </snapshotRepository>
+</distributionManagement>
+```
+
+The `id` must be the same with what you
+[defined in `settings.xml`](#authenticating-to-the-gitlab-maven-repository).
+
+Replace `PROJECT_ID` with your project ID which can be found on the home page
+of your project.
+
+If you have a self-hosted GitLab installation, replace `gitlab.com` with your
+domain name.
+
+NOTE: **Note:**
+For retrieving artifacts, you can use either the
+[URL encoded](../../../api/README.md#namespaced-path-encoding) path of the project
+(e.g., `group%2Fproject`) or the project's ID (e.g., `42`). However, only the
+project's ID can be used for uploading.
+
+## Uploading packages
+
+Once you have set up the [authentication](#authenticating-to-the-gitlab-maven-repository)
+and [configuration](#configuring-your-project-to-use-the-gitlab-maven-repository-url),
+test to upload a Maven artifact from a project of yours:
+
+```sh
+mvn deploy
+```
+
+You can then navigate to your project's **Packages** page and see the uploaded
+artifacts or even delete them.
+
+## Creating Maven packages with GitLab CI/CD
+
+Once you have your repository configured to use the GitLab Maven Repository,
+you can configure GitLab CI/CD to build new packages automatically. The example below
+shows how to create a new package each time the `master` branch is updated:
+
+1. Create a `ci_settings.xml` file that will serve as Maven's `settings.xml` file.
+ Add the server section with the same id you defined in your `pom.xml` file.
+ For example, in our case it's `gitlab-maven`:
+
+ ```xml
+ <settings xmlns="http://maven.apache.org/SETTINGS/1.1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.1.0 http://maven.apache.org/xsd/settings-1.1.0.xsd">
+ <servers>
+ <server>
+ <id>gitlab-maven</id>
+ <configuration>
+ <httpHeaders>
+ <property>
+ <name>Job-Token</name>
+ <value>${env.CI_JOB_TOKEN}</value>
+ </property>
+ </httpHeaders>
+ </configuration>
+ </server>
+ </servers>
+ </settings>
+ ```
+
+1. Make sure your `pom.xml` file includes the following:
+
+ ```xml
+ <repositories>
+ <repository>
+ <id>gitlab-maven</id>
+ <url>https://gitlab.com/api/v4/projects/${env.CI_PROJECT_ID}/packages/maven</url>
+ </repository>
+ </repositories>
+ <distributionManagement>
+ <repository>
+ <id>gitlab-maven</id>
+ <url>https://gitlab.com/api/v4/projects/${env.CI_PROJECT_ID}/packages/maven</url>
+ </repository>
+ <snapshotRepository>
+ <id>gitlab-maven</id>
+ <url>https://gitlab.com/api/v4/projects/${env.CI_PROJECT_ID}/packages/maven</url>
+ </snapshotRepository>
+ </distributionManagement>
+ ```
+
+ TIP: **Tip:**
+ You can either let Maven utilize the CI environment variables or hardcode your project's ID.
+
+1. Add a `deploy` job to your `.gitlab-ci.yml` file:
+
+ ```yaml
+ deploy:
+ image: maven:3.3.9-jdk-8
+ script:
+ - 'mvn deploy -s ci_settings.xml'
+ only:
+ - master
+ ```
+
+1. Push those files to your repository.
+
+The next time the `deploy` job runs, it will copy `ci_settings.xml` to the
+user's home location (in this case the user is `root` since it runs in a
+Docker container), and Maven will utilize the configured CI
+[environment variables](../../../ci/variables/README.md#predefined-environment-variables).
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+# GitLab NPM Registry **(PREMIUM)**
+
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/issues/5934) in [GitLab Premium](https://about.gitlab.com/pricing/) 11.7.
+
+With the GitLab NPM Registry, every
+project can have its own space to store NPM packages.
+
+![GitLab NPM Registry](img/npm_package_view.png)
+
+NOTE: **Note:**
+Only [scoped](https://docs.npmjs.com/misc/scope) packages are supported.
+
+## Enabling the NPM Registry
+
+NOTE: **Note:**
+This option is available only if your GitLab administrator has
+[enabled support for the NPM registry](../../../administration/packages/index.md).**(PREMIUM ONLY)**
+
+After the NPM registry is enabled, it will be available for all new projects
+by default. To enable it for existing projects, or if you want to disable it:
+
+1. Navigate to your project's **Settings > General > Permissions**.
+1. Find the Packages feature and enable or disable it.
+1. Click on **Save changes** for the changes to take effect.
+
+You should then be able to see the **Packages** section on the left sidebar.
+
+Before proceeding to authenticating with the GitLab NPM Registry, you should
+get familiar with the package naming convention.
+
+## Package naming convention
+
+**Packages must be scoped in the root namespace of the project**. The package
+name may be anything but it is preferred that the project name be used unless
+it is not possible due to a naming collision. For example:
+
+| Project | Package | Supported |
+| ---------------------- | ----------------------- | --------- |
+| `foo/bar` | `@foo/bar` | Yes |
+| `foo/bar/baz` | `@foo/baz` | Yes |
+| `foo/bar/buz` | `@foo/anything` | Yes |
+| `gitlab-org/gitlab-ce` | `@gitlab-org/gitlab-ce` | Yes |
+| `gitlab-org/gitlab-ce` | `@foo/bar` | No |
+
+Now, you can configure your project to authenticate with the GitLab NPM
+Registry.
+
+## Authenticating to the GitLab NPM Registry
+
+If a project is private or you want to upload an NPM package to GitLab,
+credentials will need to be provided for authentication. Support is available for [OAuth tokens](../../../api/oauth2.md#resource-owner-password-credentials-flow) or [personal access tokens](../../profile/personal_access_tokens.md).
+
+CAUTION: **2FA is only supported with personal access tokens:**
+If you have 2FA enabled, you need to use a [personal access token](../../profile/personal_access_tokens.md) with OAuth headers. Standard OAuth tokens won't be able to authenticate to the GitLab NPM Registry.
+
+### Authenticating with an OAuth token
+
+To authenticate with an [OAuth token](../../../api/oauth2.md#resource-owner-password-credentials-flow)
+or [personal access token](../../profile/personal_access_tokens.md), add a corresponding section to your `.npmrc` file:
+
+```ini
+; Set URL for your scoped packages.
+; For example package with name `@foo/bar` will use this URL for download
+@foo:registry=https://gitlab.com/api/v4/packages/npm/
+
+; Add the token for the scoped packages URL. This will allow you to download
+; `@foo/` packages from private projects.
+//gitlab.com/api/v4/packages/npm/:_authToken=<your_token>
+
+; Add token for uploading to the registry. Replace <your_project_id>
+; with the project you want your package to be uploaded to.
+//gitlab.com/api/v4/projects/<your_project_id>/packages/npm/:_authToken=<your_token>
+```
+
+Replace `<your_project_id>` with your project ID which can be found on the home page
+of your project and `<your_token>` with your OAuth or personal access token.
+
+If you have a self-hosted GitLab installation, replace `gitlab.com` with your
+domain name.
+
+You should now be able to download and upload NPM packages to your project.
+
+NOTE: **Note:**
+If you encounter an error message with [Yarn](https://yarnpkg.com/en/), see the
+[troubleshooting section](#troubleshooting).
+
+## Uploading packages
+
+Before you will be able to upload a package, you need to specify the registry
+for NPM. To do this, add the following section to the bottom of `package.json`:
+
+```json
+ "publishConfig": {
+ "@foo:registry":"https://gitlab.com/api/v4/projects/<your_project_id>/packages/npm/"
+ }
+```
+
+Replace `<your_project_id>` with your project ID, which can be found on the home
+page of your project, and replace `@foo` with your own scope.
+
+If you have a self-hosted GitLab installation, replace `gitlab.com` with your
+domain name.
+
+Once you have enabled it and set up [authentication](#authenticating-to-the-gitlab-npm-registry),
+you can upload an NPM package to your project:
+
+```sh
+npm publish
+```
+
+You can then navigate to your project's **Packages** page and see the uploaded
+packages or even delete them.
+
+If you attempt to publish a package with a name that already exists within
+a given scope, you will receive a `403 Forbidden!` error.
+
+## Uploading a package with the same version twice
+
+If you upload a package with a same name and version twice, GitLab will show
+both packages in the UI, but the GitLab NPM Registry will expose the most recent
+one as it supports only one package per version for `npm install`.
+
+## Troubleshooting
+
+### Error running yarn with NPM registry
+
+If you are using [yarn](https://yarnpkg.com/en/) with the NPM registry, you may get
+an error message like:
+
+```sh
+yarn install v1.15.2
+warning package.json: No license field
+info No lockfile found.
+warning XXX: No license field
+[1/4] 🔍 Resolving packages...
+[2/4] 🚚 Fetching packages...
+error An unexpected error occurred: "https://gitlab.com/api/v4/projects/XXX/packages/npm/XXX/XXX/-/XXX/XXX-X.X.X.tgz: Request failed \"404 Not Found\"".
+info If you think this is a bug, please open a bug report with the information provided in "/Users/XXX/gitlab-migration/module-util/yarn-error.log".
+info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command
+```
+
+In this case, try adding this to your `.npmrc` file (and replace `<your_oauth_token>`
+with your with your OAuth or personal access token):
+
+```text
+//gitlab.com/api/v4/projects/:_authToken=<your_oauth_token>
+```