Support bootstrap artifact

app/models/ci/build.rb

@@ -184,6 +184,18 @@ module Ci
         end
       end
+      after_transition any => [:success] do |build|
+        if build.bootstrap? && build.job_artifacts_gitlab_ci_yaml
+          # very hacky way to inject ci_yaml_file!
+          build.job_artifacts_gitlab_ci_yaml.each_blob do |blob|
+            build.pipeline.instance_variable_set(:@ci_yaml_file, blob)
+          end
+          
+          Ci::PopulatePipelineService.new(build.project, build.user).execute(
+            build.pipeline, nil, nil, save_on_errors: true)
+        end
+      end
+
       before_transition any => [:failed] do |build|
         next unless build.project
         next if build.retries_max.zero?
@@ -832,5 +844,9 @@ module Ci
     def project_destroyed?
       project.pending_delete?
     end
+
+    def bootstrap?
+      self.name = 'bootstrap'
+    end
   end
 end

app/models/ci/job_artifact.rb

@@ -9,7 +9,7 @@ module Ci
     NotSupportedAdapterError = Class.new(StandardError)
     TEST_REPORT_FILE_TYPES = %w[junit].freeze
-    NON_ERASABLE_FILE_TYPES = %w[trace].freeze
+    NON_ERASABLE_FILE_TYPES = %w[trace gitlab_ci_yaml].freeze
     DEFAULT_FILE_NAMES = {
       archive: nil,
       metadata: nil,
@@ -19,7 +19,8 @@ module Ci
       sast: 'gl-sast-report.json',
       dependency_scanning: 'gl-dependency-scanning-report.json',
       container_scanning: 'gl-container-scanning-report.json',
-      dast: 'gl-dast-report.json'
+      dast: 'gl-dast-report.json',
+      gitlab_ci_yaml: 'gitlab-ci.yml'
     }.freeze
     TYPE_AND_FORMAT_PAIRS = {
@@ -31,7 +32,8 @@ module Ci
       sast: :gzip,
       dependency_scanning: :gzip,
       container_scanning: :gzip,
-      dast: :gzip
+      dast: :gzip,
+      gitlab_ci_yaml: :gzip
     }.freeze
     belongs_to :project
@@ -76,7 +78,8 @@ module Ci
       dependency_scanning: 6, ## EE-specific
       container_scanning: 7, ## EE-specific
       dast: 8, ## EE-specific
-      codequality: 9 ## EE-specific
+      codequality: 9, ## EE-specific
+      gitlab_ci_yaml: 10
     }
     enum file_format: {

app/services/ci/populate_pipeline_service.rb

@@ -26,7 +26,7 @@ module Ci
       sequence.build! do |pipeline, sequence|
         if sequence.complete?
-          complete_block.call
+          complete_block.call if complete_block
           pipeline.process!
         end
       end