Add sast:image section to autodevops docs

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

doc/topics/autodevops/index.md

@@ -20,6 +20,7 @@ project in an easy and automatic way:
 1. [Auto Test](#auto-test)
 1. [Auto Code Quality](#auto-code-quality)
 1. [Auto SAST (Static Application Security Testing)](#auto-sast)
+1. [Auto SAST for Docker images](#auto-sast-for-docker-images)
 1. [Auto Browser Performance Testing](#auto-browser-performance-testing)
 1. [Auto Review Apps](#auto-review-apps)
 1. [Auto Deploy](#auto-deploy)
@@ -209,17 +210,17 @@ check out.
 
 Any security warnings are also [shown in the merge request widget](../../user/project/merge_requests/sast.md).
 
-### Auto SAST
+### Auto SAST for Docker images
 
-> Introduced in [GitLab Enterprise Edition Ultimate][ee] 10.3.
+> Introduced in [GitLab Enterprise Edition Ultimate][ee] 10.4.
 
-Static Application Security Testing (SAST) uses the
-[gl-sast Docker image](https://gitlab.com/gitlab-org/gl-sast) to run static
-analysis on the current code and checks for potential security issues. Once the
+Vulnerability Static Analysis for Containers. It uses the
+[clair](https://github.com/coreos/clair) to run static
+analysis on the current Docker image and checks for potential security issues. Once the
 report is created, it's uploaded as an artifact which you can later download and
 check out.
 
-Any security warnings are also [shown in the merge request widget](https://docs.gitlab.com/ee/user/project/merge_requests/sast.html).
+Any security warnings are also [shown in the merge request widget](../../user/project/merge_requests/sast.md).
 
 ### Auto Browser Performance Testing
 
@@ -233,7 +234,8 @@ Auto Browser Performance Testing utilizes the [Sitespeed.io container](https://h
 /direction
 ```
 
-In GitLab Enterprise Edition Premium, performance differences between the source and target branches are [shown in the merge request widget](https://docs.gitlab.com/ee/user/project/merge_requests/browser_performance_testing.html).
+In GitLab Enterprise Edition Premium, performance differences between the source
+and target branches are [shown in the merge request widget](../../user/project/merge_requests/browser_performance_testing.md).
 
 ### Auto Review Apps