1 files changed, 21 insertions, 0 deletions
diff --git a/lib/gitlab/ci/build/prerequisite/deployment.rb b/lib/gitlab/ci/build/prerequisite/deployment.rb
new file mode 100644
index 00000000000..0442fda1dda
--- /dev/null
+++ b/lib/gitlab/ci/build/prerequisite/deployment.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Ci
+    module Build
+      module Prerequisite
+        class Deployment < Base
+          def unmet?
+            build.starts_environment? && !build.has_deployment?
+          end
+
+          def complete!
+            return unless unmet?
+
+            build.create_deployment
+          end
+        end
+      end
+    end
+  end
+end