ci: add validation of commits on branch

re #121

.gitlab-ci.yml

@@ -41,6 +41,13 @@ lint:js:
     - cd ${HOME}
     - npm run lint:js
 
+lint:commits:
+   image: $IMAGE_ORG/$IMAGE_NAME:$CI_COMMIT_SHA
+   stage: test
+   script:
+     - cd ${HOME}
+     - yarn commitlint --from=master --to=$CI_COMMIT_REF_NAME
+
 test:
   image: $IMAGE_ORG/$IMAGE_NAME:$CI_COMMIT_SHA
   stage: test