use makefile

.gitlab-ci.yml

@@ -39,9 +39,7 @@ code_coverage:
     paths:
       - ./coverage.html
   script:
-    - go test -coverprofile=coverage.out ./...
-    - go tool cover -func=coverage.out || true
-    - go tool cover -html=coverage.out -o ./coverage.html
+    - make coverage
 
 build:
   stage: build