Update .gitlab-ci.yml

.gitlab-ci.yml

 variables:
-  DOCKER_USER: javicorvi
-  DOCKER_BUILD: $DOCKER_USER/$CI_PROJECT_NAME:$CI_COMMIT_REF_NAME
+  DOCKER_REGISTRY: registry.gitlab.bsc.es
+  IMAGE_FULL_PATH: $DOCKER_REGISTRY/$CI_PROJECT_PATH:$CI_COMMIT_REF_NAME
 stages:
   - build
 build_docker_image:
   stage: build
   script:
-    - docker login -u javicorvi -p $DOCKER_PASS
-    - docker build -t $DOCKER_BUILD .
-    - docker push $DOCKER_BUILD
+     - docker login -u gitlab-ci-token -p $CI_BUILD_TOKEN $DOCKER_REGISTRY
+     - docker build -t $IMAGE_FULL_PATH .
+     - docker push $IMAGE_FULL_PATH
   tags:
     - build