Registry Access Management
Registry Access Management is available to Docker Business customers only.
With Registry Access Management, administrators can ensure that their developers using Docker Desktop only access registries that are allowed. This is done through the Registry Access Management dashboard on Docker Hub.
Registry Access Management supports both cloud and on-prem registries. Example registries administrators can allow include:
- Docker Hub. This is enabled by default.
- Amazon ECR
- GitHub Container Registry
- Google Container Registry
You need to configure a registry.json to enforce sign-in. For Registry Access Management to take effect, Docker Desktop users must authenticate to your organization.
Configure Registry Access Management permissions
To configure Registry Access Management permissions:
- Sign in to your Docker Hub account as an organization owner.
- Select an organization and then navigate to the Settings tab on the Organizations page and select Registry Access.
Toggle on Registry Access Management to set the permissions for your registry.
When enabled, the Docker Hub registry is set by default, however you can also restrict this registry for your developers.
- To add registries to your list, select Add and enter your registry details in the applicable fields, then select Create.
Verify that the registry appears in your list and select Save & Apply. You can verify that your changes are saved in the Activity tab. There is no limit on the number of registries you can add.
Once you add a registry, it takes up to 24 hours for the changes to be enforced on your developers’ machines. If you want to apply the changes sooner, you must force a Docker logout on your developers’ machine and have the developers re-authenticate for Docker Desktop.
Verify the restrictions
The new Registry Access Management policy takes effect after the developer successfully authenticates to Docker Desktop using their organization credentials. If a developer attempts to pull an image from a disallowed registry via the Docker CLI, they receive an error message that the organization has disallowed this registry.
There are certain limitations when using Registry Access Management:
- Windows image pulls, and image builds are not restricted
- When RAM is enabled, the registry restrictions are currently applied to the ADD instruction of the Dockerfile when the parameter of the ADD instruction is a URL. A workaround for this is to add the domains of URL parameters to the list of allowed registry addresses under the Registry Access Management settings of your organization.
- Builds such as
docker buildxusing a Kubernetes driver are not restricted
- Builds such as
docker buildxusing a custom docker-container driver are not restricted
- Blocking is DNS-based; you must use a registry’s access control mechanisms to distinguish between “push” and “pull”
- WSL 2 requires at least a 5.4 series Linux kernel (this does not apply to earlier Linux kernel series)
- Under the WSL 2 network, traffic from all Linux distributions is restricted (this will be resolved in the updated 5.15 series Linux kernel)
- Not currently supported on Hyper-V Windows Containers
Also, Registry Access Management operates on the level of hosts, not IP addresses. Developers can bypass this restriction within their domain resolution, for example by running Docker against a local proxy or modifying their operating system’s
sts file. Docker Desktop does not support blocking these forms of manipulation.