Docker Registry is a stateless, very scalable server-side key application that lets you store and distribute Docker images. The registry is believed to be open-source, permitted, and under the Apache License.

What is a Docker Registry?

A storage and distribution system for Docker images has been released by the Docker Registry named. In which there can also be many different versions of the same type of image, which are identified using their tags.

The Docker Registry is managed sequentially in Docker repositories, where a repository can contain all versions of a specific type of image. The registry allows users of Docker to pull images locally, and itself pushes new images to the registry.

By default, the Docker engine interacts with DockerHub and all public registry instances of Docker. However, doing a commercially supported version called Docker TrustedRegistry with the open-source DockerRegistry/distribution makes it possible to run on-premises. And with this other public registries are made available online.

Multiple Docker Registries

Artifactory is a tool that lets you define as many Docker registries as you want. This allows you to manage each project in a separate registry and use it to have the best possible access control to your Docker images.

Use Docker Naturally

Artifactory supports contextual calls to the Registry API provided by Docker very well so that you can also transparently use the Docker client to access images from them through Artifactory.

Docker Build Support

Artifact has always supported Docker BuildX, which allows you to easily build and push multi-architecture images using the Docker BuildX CLI. And for more information, see Pushing images in bulk using the Docker Build CLI.

OCI Support

Artifactory is OCI compliant and supports OCI clients as well, allowing you to deploy OCI images in Docker registries as well as resolve.

docker build support

Artifactory supports Docker BuildX very well, allowing you to easily build and push multiple architecture images using the Docker BuildX CLI. And for more information, Bulk Pushing Images Using Docker Build CLI Can Also Be Viewed.

Confidently promoting images for production

Artifactory allows itself to promote Docker images as output quality gateways through, immutable, and stable binaries.

Registries and Repositories

Docker and Artifactory both use the term “repository”, but differently for each.

Docker repositories are a kind of hosted archive of tagged images that can, together, form multiple filesystems for a single container.

Whereas Docker Registry acts as a host from which Docker repositories can be stored

An Artifactory repository is a hosted collection of Docker repositories that can, effectively, be accessed in any way by a Docker registry, as well as transparently with the Docker client.

Since Artifactory puts no limit on the number of repositories you can create, it also allows you to easily manage any number of Docker registries in Artifactory.

Other Public Registries

Other companies host online Docker registries for the public to pay for using them. Cloud providers such as Google and AWS, also provide container-hosting services.

The Amazon Elastic Container Registry (ECR) is integrated with the AWS Identity and Access Management (IAM) service for authentication as well. In that, it only supports private repositories and does not even provide automatic image creation.

Google Container Registry (GCR) authentication is based on permissions from Google’s cloud storage service. It supports only private repositories and is automated through integration with Google Cloud source repositories, Bitbucket and GitHub. Leads by creating an image.

Private Docker Registry supports LDAP, OAuth, and Active Directory authentication only. And this cable can provide both private and public repositories, up to 3 repositories (private or public) for free.

Azure Container Registry (ACR) which has been supporting multi-region registries and authenticates along with Active Directory. that it is supporting only private repositories and does not provide automatic image creation.

Private Registries

There are several use cases for running a private registry on-premises, including:

Images can be distributed within a separate network (not by sending images over the Internet)

Rapid CD / CI pipelines are built to enable rapid deployment in on-premises environments.

A new image is deployed on a large cluster of machines

, where images are stored, has to be tightly controlled

Running a private registry system, especially distributions for that production, requires a number of operational skills, such as ensuring availability, monitoring and security, logging and log processing, and HTTP and A strong understanding of overall network communication is also important.

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