客户端上传时候显示错误：

 unauthorized: authentication required

cat /var/log/messages

显示错误为：

Sep 28 22:12:55 docker4 dockerd: time="2016-09-28T22:12:55.510621993+08:00" level=error msg="Attempting next endpoint for push after error: unauthorized: authentication required"

对应同一时间点在gitlab server上的log里面显示错误：

cat /srv/gitlab/logs/registry/current

2016-09-28_22:12:55.01750 time="2016-09-28T22:12:54.989614996Z" level=error msg="token not to be used before 1475070839 or after 1475071144 - currently 1475071974"

原因为container registry token过期。默认gitlab container registry上传时间为5分钟，改为60分钟即可。

进入admin area，settings：

Container Registry选项下改为60分钟即可。

Gitlab CE Docker Image Too Large to Push