Allow build stage to be disabled

changelogs/unreleased/allow-disable-build-for-auto-devops.yml

+---
+title: Allow disabling build stage for Auto Devops
+merge_request: 48638
+author: Shane Davidson @shanekdavidson
+type: added

doc/topics/autodevops/customize.md

@@ -387,6 +387,8 @@ The following table lists variables used to disable jobs.
 |----------------------------------------|---------------------------------|-----------------------|-----------------|
 | `.fuzz_base`                           | `COVFUZZ_DISABLED`              | [From GitLab 13.2](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/34984) | [Read more](../../user/application_security/coverage_fuzzing/) about how `.fuzz_base` provide capability for your own jobs. If the variable is present, your jobs aren't created. |
 | `apifuzzer_fuzz`                       | `API_FUZZING_DISABLED`          | [From GitLab 13.3](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/39135) | If the variable is present, the job isn't created. |
+| `build`                                | `BUILD_DISABLED`                |                       | If the variable is present, the job isn't created. |
+| `build_artifact`                       | `BUILD_DISABLED`                |                       | If the variable is present, the job isn't created. |
 | `bandit-sast`                          | `SAST_DISABLED`                 |                       | If the variable is present, the job isn't created. |
 | `brakeman-sast`                        | `SAST_DISABLED`                 |                       | If the variable is present, the job isn't created. |
 | `bundler-audit-dependency_scanning`    | `DEPENDENCY_SCANNING_DISABLED`  |                       | If the variable is present, the job isn't created. |

lib/gitlab/ci/templates/Jobs/Build.gitlab-ci.yml

@@ -16,6 +16,8 @@ build:
       fi
     - /build/build.sh
   rules:
+    - if: '$BUILD_DISABLED'
+      when: never
     - if: '$AUTO_DEVOPS_PLATFORM_TARGET == "EC2"'
       when: never
     - if: '$CI_COMMIT_TAG || $CI_COMMIT_BRANCH'
@@ -26,4 +28,6 @@ build_artifact:
     - printf "To build your project, please create a build_artifact job into your .gitlab-ci.yml file.\nMore information at https://docs.gitlab.com/ee/ci/cloud_deployment\n"
     - exit 1
   rules:
+    - if: '$BUILD_DISABLED'
+      when: never
     - if: '$AUTO_DEVOPS_PLATFORM_TARGET == "EC2"'