Remove unnecessary latest tag

Author: itskingori

circle.yml

@@ -18,5 +18,5 @@ deployment:
     tag: /.*/
     commands:
       - docker login -e $DOCKER_EMAIL -u $DOCKER_USER -p $DOCKER_PASS
-      - docker tag $IMAGE_NAME:latest $IMAGE_NAME:$CIRCLE_TAG
+      - docker tag $IMAGE_NAME $IMAGE_NAME:$CIRCLE_TAG
       - docker push $IMAGE_NAME:$CIRCLE_TAG