Configure SAST and Secret Detection in .gitlab-ci.yml, creating this file if it does not already exist

.gitlab-ci.yml

@@ -5,9 +5,18 @@
 # Container Scanning customization: https://docs.gitlab.com/ee/user/application_security/container_scanning/#customizing-the-container-scanning-settings
 # Note that environment variables can be set in several places
 # See https://docs.gitlab.com/ee/ci/variables/#cicd-variable-precedence
+:stages:
+- test
+:sast:
+  :stage: test
+:include:
+- :template: Security/SAST.gitlab-ci.yml
 stages:
 - test
-sast:
-  stage: test
+- secret-detection
+variables:
+  SECRET_DETECTION_ENABLED: 'true'
+secret_detection:
+  stage: secret-detection
 include:
-- template: Security/SAST.gitlab-ci.yml
+- template: Security/Secret-Detection.gitlab-ci.yml