Merge branch 'docs-sast-dind-envs' into 'master'

Add variables for DIND-less implementation to the SAST docs

See merge request gitlab-org/gitlab!19537

doc/user/application_security/sast/analyzers.md

@@ -111,6 +111,9 @@ This configuration doesn't benefit from the integrated detection step.
 SAST has to fetch and spawn each Docker image to establish whether the
 custom analyzer can scan the source code.
 
+CAUTION: **Caution:**
+Custom analyzers are not spawned automatically when [Docker In Docker](index.md#disabling-docker-in-docker-for-sast) is disabled.
+
 ## Analyzers Data
 
 | Property \ Tool                         | Apex                 | Bandit               | Brakeman             | ESLint security      | Find Sec Bugs        | Flawfinder           | Go AST Scanner       | NodeJsScan           | Php CS Security Audit   | Security code Scan (.NET)   | TSLint Security    | Sobelow            |

doc/user/application_security/sast/index.md

@@ -193,13 +193,14 @@ SAST can be [configured](#customizing-the-sast-settings) using environment varia
 The following are Docker image-related variables.
 
 | Environment variable         | Description                                                                                                                                                                                                              |
-|-------------------------------|--------------------------------------------------------------------------------|
-| `SAST_ANALYZER_IMAGES`        | Comma separated list of custom images. Default images are still enabled. Read more about [customizing analyzers](analyzers.md).       |
+|------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `SAST_ANALYZER_IMAGES`       | Comma separated list of custom images. Default images are still enabled. Read more about [customizing analyzers](analyzers.md). Not available when [Docker in Docker is disabled](#disabling-docker-in-docker-for-sast). |
 | `SAST_ANALYZER_IMAGE_PREFIX` | Override the name of the Docker registry providing the default images (proxy). Read more about [customizing analyzers](analyzers.md).                                                                                    |
-| `SAST_ANALYZER_IMAGE_TAG`     | Override the Docker tag of the default images. Read more about [customizing analyzers](analyzers.md).                                 |
+| `SAST_ANALYZER_IMAGE_TAG`    | Override the Docker tag of the default images. Read more about [customizing analyzers](analyzers.md). Not available when [Docker in Docker is disabled](#disabling-docker-in-docker-for-sast).                           |
+| `SAST_MAJOR_VERSION`         | Override the Docker tag of the default images. Only available when [Docker in Docker is disabled](#disabling-docker-in-docker-for-sast).                                                                                 |
 | `SAST_DEFAULT_ANALYZERS`     | Override the names of default images. Read more about [customizing analyzers](analyzers.md).                                                                                                                             |
 | `SAST_DISABLE_DIND`          | Disable Docker in Docker and run analyzers [individually](#disabling-docker-in-docker-for-sast).                                                                                                                         |
-| `SAST_PULL_ANALYZER_IMAGES`   | Pull the images from the Docker registry (set to 0 to disable). Read more about [customizing analyzers](analyzers.md).                 |
+| `SAST_PULL_ANALYZER_IMAGES`  | Pull the images from the Docker registry (set to 0 to disable). Read more about [customizing analyzers](analyzers.md). Not available when [Docker in Docker is disabled](#disabling-docker-in-docker-for-sast).          |
 
 #### Vulnerability filters
 
@@ -224,6 +225,9 @@ The following variables configure timeouts.
 | `SAST_PULL_ANALYZER_IMAGE_TIMEOUT`       |      5m | Time limit when pulling the image of an analyzer. Timeouts are parsed using Go's [`ParseDuration`](https://golang.org/pkg/time/#ParseDuration). Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h". For example, "300ms", "1.5h" or "2h45m". |
 | `SAST_RUN_ANALYZER_TIMEOUT`              |     20m | Time limit when running an analyzer. Timeouts are parsed using Go's [`ParseDuration`](https://golang.org/pkg/time/#ParseDuration). Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h". For example, "300ms", "1.5h" or "2h45m".|
 
+NOTE: **Note:**
+Timeout variables are not applicable for setups with [disabled Docker In Docker](index.md#disabling-docker-in-docker-for-sast).
+
 #### Analyzer settings
 
 Some analyzers can be customized with environment variables.