Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -51,6 +51,7 @@ build:
     - echo "${DOCKER_PASSWORD}" | docker login -u "${DOCKER_USERNAME}" --password-stdin "${DOCKER_REGISTRY}"
   script:
     - echo "Building image..."
+    - docker build -t $IMAGE_NAME:$DOCKER_TAG .
   after_script:
     - echo "Docker image pushed successfully!"