Docker Trusted Registry overview
Estimated reading time: 2 minutesThese are the docs for DTR version 2.4.0
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Docker Trusted Registry (DTR) is the enterprise-grade image storage solution from Docker. You install it behind your firewall so that you can securely store and manage the Docker images you use in your applications.
Image management
DTR can be installed on-premises, or on a virtual private cloud. And with it, you can store your Docker images securely, behind your firewall.
You can use DTR as part of your continuous integration, and continuous delivery processes to build, ship, and run your applications.
DTR has a web based user interface that allows authorized users in your organization to browse docker images. It provides information about who pushed what image at what time. It even allows you to see what dockerfile lines were used to produce the image and, if security scanning is enabled, to see a list of all of the software installed in your images.
Availability
DTR is highly available through the use of multiple replicas of all containers and metadata such that if a machine fails, DTR continues to operate and can be repaired.
Efficiency
DTR has the ability to cache images closer to users to reduce the amount of bandwidth used during docker pulls.
DTR has the ability to clean up unreferenced manifests and layers.
Built-in access control
DTR uses the same authentication mechanism as Docker Universal Control Plane. Users can be managed manually or synched from LDAP or Active Directory. DTR uses Role Based Access Control (RBAC) to allow you to implement fine-grained access control policies for who has access to your Docker images.
Security scanning
DTR has a built in security scanner that can be used to discover what versions of software are used in your images. It scans each layer and aggregates the results to give you a complete picture of what you are shipping as a part of your stack. Most importantly, it co-relates this information with a vulnerability database that is kept up to date through periodic updates. This gives you unprecedented insight into your exposure to known security threats.
Image signing
DTR ships with Notary built in so that you can use Docker Content Trust to sign and verify images. For more information about managing Notary data in DTR see the DTR-specific notary documentation.