Create a Changes section in the container scanning docs

doc/user/application_security/container_scanning/index.md

@@ -49,37 +49,9 @@ To enable container scanning in your pipeline, you need the following:
 
 ## Configuration
 
-How you enable container scanning depends on your GitLab version:
-
-- GitLab 11.9 and later: [Include](../../../ci/yaml/index.md#includetemplate) the
-  [`Container-Scanning.gitlab-ci.yml` template](https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Security/Container-Scanning.gitlab-ci.yml)
-  that comes with your GitLab installation.
-- GitLab versions earlier than 11.9: Copy and use the job from the
-  [`Container-Scanning.gitlab-ci.yml` template](https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Security/Container-Scanning.gitlab-ci.yml).
-
-Other changes:
-
-- GitLab 13.6 [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/263482) better support for
-  [FIPS](https://csrc.nist.gov/publications/detail/fips/140/2/final) by upgrading the
-  `CS_MAJOR_VERSION` from `2` to `3`. Version `3` of the `container_scanning` Docker image uses
-  [`centos:centos8`](https://hub.docker.com/_/centos)
-  as the new base. It also removes the use of the [start.sh](https://gitlab.com/gitlab-org/security-products/analyzers/klar/-/merge_requests/77)
-  script and instead executes the analyzer by default. Any customizations made to the
-  `container_scanning` job's [`before_script`](../../../ci/yaml/index.md#before_script)
-  and [`after_script`](../../../ci/yaml/index.md#after_script)
-  blocks may not work with the new version. To roll back to the previous [`alpine:3.11.3`](https://hub.docker.com/_/alpine)-based
-  Docker image, you can specify the major version through the [`CS_MAJOR_VERSION`](#available-cicd-variables)
-  variable.
-- GitLab 13.9 [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/322656) integration with
-  [Trivy](https://github.com/aquasecurity/trivy) by upgrading `CS_MAJOR_VERSION` from `3` to `4`.
-- GitLab 14.0 [introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/61850)
-  an integration with [Trivy](https://github.com/aquasecurity/trivy)
-  as the default for container scanning, and also [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/326279)
-  an integration with [Grype](https://github.com/anchore/grype)
-  as an alternative scanner.
-
-To include the `Container-Scanning.gitlab-ci.yml` template (GitLab 11.9 and later), add the
-following to your `.gitlab-ci.yml` file:
+To enable container scanning, add the
+[`Container-Scanning.gitlab-ci.yml` template](https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Security/Container-Scanning.gitlab-ci.yml)
+to your `.gitlab-ci.yml` file:
 
 ```yaml
 include:
@@ -617,3 +589,29 @@ To prevent the error, ensure the Docker version that the runner is using is
 ### Getting warning message `gl-container-scanning-report.json: no matching files`
 
 For information on this, see the [general Application Security troubleshooting section](../../../ci/pipelines/job_artifacts.md#error-message-no-files-to-upload).
+
+## Changes
+
+- GitLab 13.6 [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/263482) better support for
+  [FIPS](https://csrc.nist.gov/publications/detail/fips/140/2/final) by upgrading the
+  `CS_MAJOR_VERSION` from `2` to `3`. Version `3` of the `container_scanning` Docker image uses
+  [`centos:centos8`](https://hub.docker.com/_/centos)
+  as the new base. It also removes the use of the [start.sh](https://gitlab.com/gitlab-org/security-products/analyzers/klar/-/merge_requests/77)
+  script and instead executes the analyzer by default. Any customizations made to the
+  `container_scanning` job's [`before_script`](../../../ci/yaml/index.md#before_script)
+  and [`after_script`](../../../ci/yaml/index.md#after_script)
+  blocks may not work with the new version. To roll back to the previous [`alpine:3.11.3`](https://hub.docker.com/_/alpine)-based
+  Docker image, you can specify the major version through the [`CS_MAJOR_VERSION`](#available-cicd-variables)
+  variable.
+- GitLab 13.9 [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/322656) integration with
+  [Trivy](https://github.com/aquasecurity/trivy) by upgrading `CS_MAJOR_VERSION` from `3` to `4`.
+- GitLab 13.9 [deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/321451) the integration with
+  [Clair](https://github.com/quay/clair/).
+- GitLab 14.0 [introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/61850)
+  an integration with [Trivy](https://github.com/aquasecurity/trivy)
+  as the default for container scanning, and also [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/326279)
+  an integration with [Grype](https://github.com/anchore/grype)
+  as an alternative scanner.
+
+Other changes to the container scanning analyzer can be found in the project's
+[changelog](https://gitlab.com/gitlab-org/security-products/analyzers/container-scanning/-/blob/master/CHANGELOG.md).