Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -49,7 +49,7 @@ build:
   before_script:
     - echo "Building Docker image for commit:" ${CI_COMMIT_SHORT_SHA}
     - echo "Logging in to Docker registry..."
-    - echo ${DOCKER_PASSWORD} | docker login -u ${DOCKER_USERNAME} --password-stdin ${DOCKER_REGISTRY}
+    - echo ${DOCKER_PASSWORD} | ${DOCKER_USERNAME} | ${DOCKER_REGISTRY}
   script:
     - echo "Building image..."
   after_script: