Delete artifacts for pages unless expiry date is specified

app/services/projects/update_pages_service.rb

@@ -34,6 +34,8 @@ module Projects
       end
     rescue => e
       error(e.message)
+    ensure
+      build.erase_artifacts! unless build.has_expiring_artifacts?
     end
     private

changelogs/unreleased/delete-artifacts-for-pages.yml

+---
+title: Delete artifacts for pages unless expiry date is specified
+merge_request:
+author:

doc/user/project/pages/getting_started_part_four.md

@@ -133,6 +133,9 @@ your Jekyll 3.4.0 site with GitLab Pages. This is the minimum
 configuration for our example. On the steps below, we'll refine
 the script by adding extra options to our GitLab CI.
+Artifacts will be automatically deleted once GitLab Pages got deployed.
+You can preserve artifacts for limited time by specifying expiry time.
+
 ### Image
 At this point, you probably ask yourself: "okay, but to install Jekyll

spec/services/projects/update_pages_service_spec.rb

@@ -26,6 +26,26 @@ describe Projects::UpdatePagesService do
         build.update_attributes(artifacts_metadata: metadata)
       end
+      context 'artifacts' do
+        context 'with expiry date' do
+          before do
+            build.artifacts_expire_in = "2 days"
+          end
+
+          it "doesn't delete artifacts" do
+            expect(execute).to eq(:success)
+            expect(build.reload.artifacts_file?).to eq(true)
+          end
+        end
+
+        context 'without expiry date' do
+          it "does delete artifacts" do
+            expect(execute).to eq(:success)
+            expect(build.reload.artifacts_file?).to eq(false)
+          end
+        end
+      end
+
       it 'succeeds' do
         expect(project.pages_deployed?).to be_falsey
         expect(execute).to eq(:success)