Merge branch 'remove-dind-from-cs-docs' into 'master'

Move DinD to job level in CS docs

See merge request gitlab-org/gitlab!32815

doc/user/application_security/container_scanning/index.md

@@ -103,9 +103,6 @@ Registry, and scans the containers:
 variables:
   DOCKER_DRIVER: overlay2
 
-services:
-  - docker:19.03.8-dind
-
 stages:
   - build
   - test
@@ -113,6 +110,8 @@ stages:
 build:
   image: docker:stable
   stage: build
+  services:
+    - docker:19.03.8-dind
   variables:
     IMAGE: $CI_REGISTRY_IMAGE/$CI_COMMIT_REF_SLUG:$CI_COMMIT_SHA
   script:
@@ -274,14 +273,13 @@ this with a pipeline means you won't have to do it manually each time. You can u
 ```yaml
 image: docker:stable
 
-services:
-  - docker:19.03.8-dind
-
 stages:
   - build
 
 build_latest_vulnerabilities:
   stage: build
+  services:
+    - docker:19.03.8-dind
   script:
     - docker pull arminc/clair-db:latest
     - docker tag arminc/clair-db:latest $CI_REGISTRY/namespace/clair-vulnerabilities-db