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Merge pull request #6581 from fredlf/copyedit_dockerrepo
Revised and fixed links on dockerrepo.md
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James Turnbull
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page_title: Working with Docker Hub
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page_description: Learning how to use Docker Hub to manage images and work flow
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page_description: Learn how to use the Docker Hub to manage Docker images and work flow
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page_keywords: repo, Docker Hub, Docker Hub, registry, index, repositories, usage, pull image, push image, image, documentation
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# Working with Docker Hub
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So far we've seen a lot about how to use Docker on the command line and
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your local host. We've seen [how to pull down
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images](/userguide/usingdocker/) that you can run your containers from
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and we've seen how to [create your own images](/userguide/dockerimages).
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So far you've learned how to use the command line to run Docker on your local host.
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You've learned how to [pull down images](/userguide/usingdocker/) to build containers
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from existing images and you've learned how to [create your own images](/userguide/dockerimages).
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Now we're going to learn a bit more about
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[Docker Hub](https://hub.docker.com) and how you can use it to enhance
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your Docker work flows.
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Next, you're going to learn how to use the [Docker Hub](https://hub.docker.com) to
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simplify and enhance your Docker workflows.
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[Docker Hub](https://hub.docker.com) is the public registry that Docker
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Inc maintains. It contains a huge collection of images, over 15,000,
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that you can download and use to build your containers. It also provides
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authentication, structure (you can setup teams and organizations), work
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flow tools like webhooks and build triggers as well as privacy features
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like private repositories for storing images you don't want to publicly
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share.
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The [Docker Hub](https://hub.docker.com) is a public registry maintained by Docker,
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Inc. It contains over 15,000 images you can download and use to build containers. It also
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provides authentication, work group structure, workflow tools like webhooks and build
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triggers, and privacy tools like private repositories for storing images you don't want
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to share publicly.
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## Docker commands and Docker Hub
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Docker acts as a client for these services via the `docker search`,
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`pull`, `login` and `push` commands.
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Docker itself provides access to Docker Hub services via the `docker search`,
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`pull`, `login`, and `push` commands. This page will show you how these commands work.
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### Account creation and login
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Typically, you'll want to start by creating an account on Docker Hub (if you haven't
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already) and logging in. You can create your account directly on
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[Docker Hub](https://hub.docker.com/account/signup/), or by running:
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$ sudo docker login
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This will prompt you for a user name, which will become the public namespace for your
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public repositories.
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If your user name is available, Docker will prompt you to enter a password and your
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e-mail address. It will then automatically log you in. You can now commit and
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push your own images up to your repos on Docker Hub.
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> **Note:**
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> Your authentication credentials will be stored in the [`.dockercfg`
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> authentication file](#authentication-file) in your home directory.
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## Searching for images
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As we've already seen we can search the
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[Docker Hub](https://hub.docker.com) registry via it's search interface
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or using the command line interface. Searching can find images by name,
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user name or description:
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You can search the [Docker Hub](https://hub.docker.com) registry via its search
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interface or by using the command line interface. Searching can find images by image
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name, user name, or description:
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$ sudo docker search centos
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NAME DESCRIPTION STARS OFFICIAL TRUSTED
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@ -41,12 +53,12 @@ user name or description:
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There you can see two example results: `centos` and
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`tianon/centos`. The second result shows that it comes from
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the public repository of a user, `tianon/`, while the first result,
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`centos`, doesn't explicitly list a repository so it comes from the
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the public repository of a user, named `tianon/`, while the first result,
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`centos`, doesn't explicitly list a repository which means that it comes from the
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trusted top-level namespace. The `/` character separates a user's
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repository and the image name.
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repository from the image name.
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Once you have found the image you want, you can download it:
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Once you've found the image you want, you can download it with `docker pull <imagename>`:
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$ sudo docker pull centos
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Pulling repository centos
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@ -55,84 +67,63 @@ Once you have found the image you want, you can download it:
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511136ea3c5a: Download complete
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7064731afe90: Download complete
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The image is now available to run a container from.
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You now have an image from which you can run containers.
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## Contributing to Docker Hub
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Anyone can pull public images from the [Docker Hub](https://hub.docker.com)
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registry, but if you would like to share your own images, then you must
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register a user first as we saw in the [first section of the Docker User
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register first, as we saw in the [first section of the Docker User
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Guide](/userguide/dockerhub/).
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To refresh your memory, you can create your user name and login to
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[Docker Hub](https://hub.docker.com/account/signup/), or by running:
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$ sudo docker login
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This will prompt you for a user name, which will become a public
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namespace for your public repositories, for example:
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training/webapp
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Here `training` is the user name and `webapp` is a repository owned by
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that user.
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If your user name is available then `docker` will also prompt you to
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enter a password and your e-mail address. It will then automatically log
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you in. Now you're ready to commit and push your own images!
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> **Note:**
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> Your authentication credentials will be stored in the [`.dockercfg`
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> authentication file](#authentication-file) in your home directory.
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## Pushing a repository to Docker Hub
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In order to push an repository to its registry you need to have named an image,
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In order to push a repository to its registry, you need to have named an image
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or committed your container to a named image as we saw
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[here](/userguide/dockerimages).
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Now you can push this repository to the registry designated by its name
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or tag.
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Now you can push this repository to the registry designated by its name or tag.
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$ sudo docker push yourname/newimage
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The image will then be uploaded and available for use.
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The image will then be uploaded and available for use by your team-mates and/or the
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community.
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## Features of Docker Hub
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Now let's look at some of the features of Docker Hub. You can find more
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information [here](/docker-io/).
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Let's take a closer look at some of the features of Docker Hub. You can find more
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information [here](http://docs.docker.com/docker-hub/).
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* Private repositories
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* Organizations and teams
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* Automated Builds
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* Webhooks
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## Private Repositories
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### Private Repositories
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Sometimes you have images you don't want to make public and share with
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everyone. So Docker Hub allows you to have private repositories. You can
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sign up for a plan [here](https://registry.hub.docker.com/plans/).
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## Organizations and teams
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### Organizations and teams
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One of the useful aspects of private repositories is that you can share
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them only with members of your organization or team. Docker Hub lets you
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create organizations where you can collaborate with your colleagues and
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manage private repositories. You can create and manage an organization
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manage private repositories. You can learn how to create and manage an organization
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[here](https://registry.hub.docker.com/account/organizations/).
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## Automated Builds
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### Automated Builds
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Automated Builds automate the building and updating of images from [GitHub](https://www.github.com)
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or [BitBucket](http://bitbucket.com), directly on Docker Hub. It works by adding a commit hook to
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your selected GitHub or BitBucket repository, triggering a build and update when you push a
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commit.
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Automated Builds automate the building and updating of images from
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[GitHub](https://www.github.com) or [BitBucket](http://bitbucket.com), directly on Docker
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Hub. It works by adding a commit hook to your selected GitHub or BitBucket repository,
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triggering a build and update when you push a commit.
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### To setup an Automated Build
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#### To setup an Automated Build
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1. Create a [Docker Hub account](https://hub.docker.com/) and login.
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2. Link your GitHub or BitBucket account through the [`Link Accounts`](https://registry.hub.docker.com/account/accounts/) menu.
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2. Link your GitHub or BitBucket account through the ["Link Accounts"](https://registry.hub.docker.com/account/accounts/) menu.
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3. [Configure an Automated Build](https://registry.hub.docker.com/builds/).
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4. Pick a GitHub or BitBucket project that has a `Dockerfile` that you want to build.
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5. Pick the branch you want to build (the default is the `master` branch).
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8. Specify where the `Dockerfile` is located. The default is `/`.
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Once the Automated Build is configured it will automatically trigger a
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build, and in a few minutes, if there are no errors, you will see your
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new Automated Build on the [Docker Hub](https://hub.docker.com) Registry.
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It will stay in sync with your GitHub and BitBucket repository until you
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build and, in a few minutes, you should see your new Automated Build on the [Docker Hub](https://hub.docker.com)
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Registry. It will stay in sync with your GitHub and BitBucket repository until you
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deactivate the Automated Build.
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If you want to see the status of your Automated Builds you can go to your
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If you want to see the status of your Automated Builds, you can go to your
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[Automated Builds page](https://registry.hub.docker.com/builds/) on the Docker Hub,
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and it will show you the status of your builds, and the build history.
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and it will show you the status of your builds and their build history.
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Once you've created an Automated Build you can deactivate or delete it. You
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cannot however push to an Automated Build with the `docker push` command.
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cannot, however, push to an Automated Build with the `docker push` command.
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You can only manage it by committing code to your GitHub or BitBucket
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repository.
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You can create multiple Automated Builds per repository and configure them
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to point to specific `Dockerfile`'s or Git branches.
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### Build Triggers
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#### Build Triggers
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Automated Builds can also be triggered via a URL on Docker Hub. This
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allows you to rebuild an Automated build image on demand.
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## Webhooks
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### Webhooks
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Webhooks are attached to your repositories and allow you to trigger an
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event when an image or updated image is pushed to the repository. With
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a webhook you can specify a target URL and a JSON payload will be
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a webhook you can specify a target URL and a JSON payload that will be
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delivered when the image is pushed.
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## Next steps
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