Try to get the offline docs to be similar - Container Scanning

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doc/user/application_security/container_scanning/index.md

@@ -205,13 +205,44 @@ If you want to whitelist specific vulnerabilities, you'll need to:
    in the [whitelist example file](https://github.com/arminc/clair-scanner/blob/v12/example-whitelist.yaml).
 1. Add the `clair-whitelist.yml` file to the Git repository of your project.
 
-### Running Container Scanning in an offline, air-gapped installation
+### Running Container Scanning in an offline (air-gapped) installation
 
-Container Scanning can be executed on an offline air-gapped GitLab Ultimate installation using the following process:
+For self-managed GitLab instances in an environment with limited, restricted, or intermittent access
+to external resources via the internet, some adjustments are required for the Container Scanning job to
+successfully run. For more information, see [Offline deployments](../offline_deployments/index.md).
+
+#### Requirements for offline Container Scanning
+
+To use Container Scanning in an offline environment, you need:
+
+- GitLab Runner with the [`docker` or `kubernetes` executor](#requirements).
+- Docker Container Registry with locally available copies of Container Scanning [analyzer](https://gitlab.com/gitlab-org/security-products/analyzers) images.
+
+NOTE: **Note:**
+GitLab Runner has a [default `pull policy` of `always`](https://docs.gitlab.com/runner/executors/docker.html#using-the-always-pull-policy),
+meaning the runner may try to pull remote images even if a local copy is available. Set GitLab
+Runner's [`pull_policy` to `if-not-present`](https://docs.gitlab.com/runner/executors/docker.html#using-the-if-not-present-pull-policy)
+in an offline environment if you prefer using only locally available Docker images.
+
+#### Make GitLab Container Scanning analyzer images available inside your Docker registry
+
+For Container Scanning, import and host the following images from `registry.gitlab.com` to your "offline" [local Docker container registry](../../packages/container_registry/index.md):
+     - [arminc/clair-db vulnerabilities database](https://hub.docker.com/r/arminc/clair-db)
+     - GitLab klar analyzer: `registry.gitlab.com/gitlab-org/security-products/analyzers/klar`
+
+The process for importing Docker images into a local offline Docker registry depends on
+**your network security policy**. Please consult your IT staff to find an accepted and approved
+process by which external resources can be imported or temporarily accessed. Note that these scanners are [updated periodically](../index.md#maintenance-and-update-of-the-vulnerabilities-database)
+with new definitions, so consider if you are able to make periodic updates yourself.
+
+For details on saving and transporting Docker images as a file, see Docker's documentation on
+[`docker save`](https://docs.docker.com/engine/reference/commandline/save/), [`docker load`](https://docs.docker.com/engine/reference/commandline/load/),
+[`docker export`](https://docs.docker.com/engine/reference/commandline/export/), and [`docker import`](https://docs.docker.com/engine/reference/commandline/import/).
+
+#### Set Container Scanning CI job variables to use local Container Scanner analyzers
+
+Container Scanning can be executed on an offline GitLab Ultimate installation using the following process:
 
-1. Host the following Docker images on a [local Docker container registry](../../packages/container_registry/index.md):
-   - [arminc/clair-db vulnerabilities database](https://hub.docker.com/r/arminc/clair-db)
-   - GitLab klar analyzer: `registry.gitlab.com/gitlab-org/security-products/analyzers/klar`
 1. [Override the container scanning template](#overriding-the-container-scanning-template) in your `.gitlab-ci.yml` file to refer to the Docker images hosted on your local Docker container registry:
 
    ```yaml