gitlab-drupal-ci#13 Enable auto-tagging in CI

.gitlab-ci.yml

@@ -3,14 +3,10 @@ include:
     ref: main
     file: '/tagrelease.yml'
 
-stages:
-  - build
-
 before_script:
   - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
 
 build-master:
-  stage: build
   script:
     - docker build --pull -t "$CI_REGISTRY_IMAGE" .
     - docker push "$CI_REGISTRY_IMAGE"