cx: update docs for RAM limits (#22365)

## Description
- Docs previously stated there were no RAM limits, this is incorrect
- 100 is the limit
- Also added some guidance around using general-purpose URLs; doing this
can deprecate use of RAM limits

## Related issues or tickets
- [ENGDOCS-2517](https://docker.atlassian.net/browse/ENGDOCS-2517)

## Reviews
- [ ] Editorial review
- [ ] Product review @ajthilakan 

[ENGDOCS-2517]:
https://docker.atlassian.net/browse/ENGDOCS-2517?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ

content/manuals/security/for-admins/hardened-desktop/registry-access-management.md

@@ -13,9 +13,16 @@ weight: 30
 
 {{< summary-bar feature_name="Registry access management" >}}
 
-With Registry Access Management (RAM), administrators can ensure that their developers using Docker Desktop only access allowed registries. This is done through the Registry Access Management dashboard in Docker Hub or the Docker Admin Console.
+With Registry Access Management (RAM), administrators can ensure that their
+developers using Docker Desktop only access allowed registries. This is done
+through the Registry Access Management dashboard in Docker Hub or the
+Docker Admin Console.
 
-Registry Access Management supports both cloud and on-prem registries. This feature operates at the DNS level and therefore is compatible with all registries. You can add any hostname or domain name you’d like to include in the list of allowed registries. However, if the registry redirects to other domains such as `s3.amazon.com`, then you must add those domains to the list.
+Registry Access Management supports both cloud and on-prem registries. This
+feature operates at the DNS level and therefore is compatible with all
+egistries. You can add any hostname or domain name you’d like to include in the
+list of allowed registries. However, if the registry redirects to other domains
+such as `s3.amazon.com`, then you must add those domains to the list.
 
 Example registries administrators can allow include:
 
@@ -29,7 +36,7 @@ Example registries administrators can allow include:
 
 ## Prerequisites
 
-You need to [enforce sign-in](../enforce-sign-in/_index.md). For Registry Access
+You must [enforce sign-in](../enforce-sign-in/_index.md). For Registry Access
 Management to take effect, Docker Desktop users must authenticate to your
 organization. Enforcing sign-in ensures that your Docker Desktop developers
 always authenticate to your organization, even though they can authenticate
@@ -53,21 +60,39 @@ feature always takes effect.
 
 ## 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.
+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.
 
 ## Caveats
 
 There are certain limitations when using Registry Access Management:
 
-- Windows image pulls and image builds are not restricted by default. For Registry Access Management to take effect on Windows Container mode, you must allow the Windows Docker daemon to use Docker Desktop's internal proxy by selecting the [Use proxy for Windows Docker daemon](/manuals/desktop/settings-and-maintenance/settings.md#proxies) setting.
-- Builds such as `docker buildx` using a Kubernetes driver are not restricted
-- Builds such as `docker buildx` using 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)
-- Images pulled by Docker Desktop when Docker Debug or Kubernetes is enabled, are not restricted by default even if Docker Hub is blocked by RAM.
+- You can add up to 100 registries/domains.
+- Windows image pulls and image builds are not restricted by default. For
+Registry Access Management to take effect on Windows Container mode, you must
+allow the Windows Docker daemon to use Docker Desktop's internal proxy by
+selecting the [Use proxy for Windows Docker daemon](/manuals/desktop/settings-and-maintenance/settings.md#proxies)
+setting.
+- Builds such as `docker buildx` using a Kubernetes driver are not restricted.
+- Builds such as `docker buildx` using 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.
+- Images pulled by Docker Desktop when Docker Debug or Kubernetes is enabled,
+are not restricted by default even if Docker Hub is blocked by RAM.
 
-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. Blocking these forms of manipulation is outside the remit of Docker Desktop.
+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. Blocking these forms of manipulation is
+outside the remit of Docker Desktop.
 
 ## More resources
 

layouts/shortcodes/admin-registry-access.html

@@ -13,19 +13,39 @@ To configure Registry Access Management permissions, perform the following steps
 
    > [!NOTE]
    >
-   > When enabled, the Docker Hub registry is set by default, however you can also restrict this registry for your developers.
+   > When enabled, the Docker Hub registry is set by default; however you can
+   > also restrict this registry for your developers.
 
-4. Select **Add registry** and enter your registry details in the applicable fields, and then select **Create** to add the registry to your list. There is no limit on the number of registries you can add.
+4. Select **Add registry** and enter your registry details in the applicable
+fields, and then select **Create** to add the registry to your list. You can
+add up to 100 registries/domains.
 5. Verify that the registry appears in your list and select **Save changes**.
 
-Once you add a registry, it can take up to 24 hours for the changes to be enforced on your developers’ machines. 
+Once you add a registry, it can take 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 signout on your developers’ machine and have the developers re-authenticate for Docker Desktop. See the [Caveats](#caveats) section below to learn more about limitations when using this feature.
+If you want to apply the changes sooner, you must force a Docker signout on your
+developers’ machine and have the developers re-authenticate for Docker Desktop.
+See the [Caveats](#caveats) section below to learn more about limitations.
 
 > [!IMPORTANT]
 >
-> Starting with Docker Desktop version 4.36, you can enforce sign-in for multiple organizations. If a developer belongs to multiple organizations with different RAM policies, only the RAM policy for the first organization listed in the `registry.json` file, `.plist` file, or registry key is enforced.
+> Starting with Docker Desktop version 4.36, you can enforce sign-in for
+multiple organizations. If a developer belongs to multiple organizations with
+different RAM policies, only the RAM policy for the first organization listed
+in the `registry.json` file, `.plist` file, or registry key is enforced.
 
 > [!TIP]
 >
-> Since RAM sets policies about where content can be fetched from, the [ADD](/reference/dockerfile/#add) instruction of the Dockerfile, when the parameter of the ADD instruction is a URL, is also subject to registry restrictions. It's recommended that you add the domains of URL parameters to the list of allowed registry addresses under the Registry Access Management settings of your organization.
+> Since RAM sets policies about where content can be fetched from, the
+[ADD](/reference/dockerfile/#add) instruction of the Dockerfile when the
+parameter of the ADD instruction is a URL is also subject to registry
+restrictions.
+>
+> If you're using ADD to fetch an image or artifact from a trusted registry via
+> URL, make sure the registry's domain is included in your organzation's
+> allowed registries list.
+>
+> RAM is not intended to restrict access to general-purpose external URLs, for
+> example, package mirrors or storage services. Attempting to add too many domains
+> may cause errors or hit system limits.