Separate persisted and runtime pipeline variables

app/models/ci/build.rb

@@ -599,6 +599,7 @@ module Ci
         break variables unless persisted?
 
         variables
+          .concat(pipeline.persisted_variables)
           .append(key: 'CI_JOB_ID', value: id.to_s)
           .append(key: 'CI_JOB_TOKEN', value: token, public: false)
           .append(key: 'CI_BUILD_ID', value: id.to_s)

app/models/ci/pipeline.rb

@@ -530,7 +530,7 @@ module Ci
     end
 
     def predefined_variables
-      persisted_variables
+      Gitlab::Ci::Variables::Collection.new
         .append(key: 'CI_CONFIG_PATH', value: ci_yaml_file_path)
         .append(key: 'CI_PIPELINE_SOURCE', value: source.to_s)
         .append(key: 'CI_COMMIT_MESSAGE', value: git_commit_message)

spec/models/ci/build_spec.rb

@@ -629,6 +629,14 @@ describe Ci::Build do
 
         it { is_expected.to eq('review/host') }
       end
+
+      context 'when using persisted variables' do
+        let(:build) do
+          create(:ci_build, environment: 'review/x$CI_BUILD_ID')
+        end
+
+        it { is_expected.to eq('review/x') }
+      end
     end
 
     describe '#starts_environment?' do

spec/services/ci/create_pipeline_service_spec.rb

@@ -395,7 +395,26 @@ describe Ci::CreatePipelineService do
         result = execute_service
 
         expect(result).to be_persisted
-        expect(Environment.find_by(name: "review/master")).not_to be_nil
+        expect(Environment.find_by(name: "review/master")).to be_present
+      end
+    end
+
+    context 'with environment name including persisted variables' do
+      before do
+        config = YAML.dump(
+          deploy: {
+            environment: { name: "review/id1$CI_PIPELINE_ID/id2$CI_BUILD_ID" },
+            script: 'ls' }
+        )
+
+        stub_ci_pipeline_yaml_file(config)
+      end
+
+      it 'skipps persisted variables in environment name' do
+        result = execute_service
+
+        expect(result).to be_persisted
+        expect(Environment.find_by(name: "review/id1/id2")).to be_present
       end
     end