fix(ci): move integration tests to an isolated step

.circleci/config.yml

@@ -36,9 +36,18 @@ workflows:
               only: /.*/
             tags:
               only: /.*/
+      - integration_testing:
+          requires:
+            - checkout
+          filters:
+            branches:
+              only: /.*/
+            tags:
+              only: /.*/
       - build:
           requires:
             - testing
+            - integration_testing
             - linting
           filters:
             branches:
@@ -90,6 +99,13 @@ jobs:
       - run: go get -u github.com/haya14busa/goverage
       - run: goverage -v -coverprofile=coverage.out ./...
       - run: godacov -t $CODACY_TOKEN -r ./coverage.out -c $CIRCLE_SHA1
+  integration_testing:
+    executor: go
+    steps:
+      - attach_workspace:
+          at: .
+      - run: go build .
+      - setup_remote_docker
       - run: ./scripts/lifecycle-tests.sh
   build:
     executor: go