Docker: retag образа

Автор: | 16/08/2017
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Надо сменить тег для образа контейнера, который используется во время билда в Китае и загрузить его к китайский же private registry.

Запуск registry описан в посте Docker: private registry в AWS [China] с S3 storage.

Загружаем образ с европейского JFrog Artifactory:

[simterm]

$ sudo docker pull engineering-docker.jfrog.io/ci-website:latest
[sudo] password for setevoy: 
latest: Pulling from engineering-docker.jfrog.io/ci-website
cacc99976415: Pull complete 
...
3cdd3d892d64: Pull complete 
Digest: sha256:c1e3cab26c8e2d2396b91c5e4c45e43588779e776851e6fdbb3919a5d34e840b
Status: Downloaded newer image for engineering-docker.jfrog.io/ci-website:latest

[/simterm]

Находим ID образа:

[simterm]

$ sudo docker images | grep ci-website                                                                                                                                                                             
engineering-docker.jfrog.io/ci-website         latest              3cdd3d892d64        15 months ago       490.6 MB

[/simterm]

Используя ID устанавливаем новый тег с URL уже китайского private registry:

[simterm]

$ sudo docker tag 3cdd3d892d64 registry.domain.cn:5000/ci-website:latest

[/simterm]

Проверяем:

[simterm]

$ sudo docker images | grep ci-website                                                                                                                                                                             
engineering-docker.jfrog.io/ci-website           latest              3cdd3d892d64        15 months ago       490.6 MB                                                                                                             
registry.domain.cn:5000/ci-website   latest              3cdd3d892d64        15 months ago       490.6 MB

[/simterm]

Логинимся на registry в Китай:

[simterm]

$ sudo docker login registry.domain.cn:5000
Username: user.docker
Password: 
Email: [email protected]
WARNING: login credentials saved in /root/.docker/config.json
Login Succeeded

[/simterm]

Пушим:

[simterm]

$ sudo docker push registry.domain.cn:5000/ci-website
The push refers to a repository [registry.domain.cn:5000/ci-website] (len: 1)
3cdd3d892d64: Image already exists 
4333985efc60: Image successfully pushed 
cc371ad67565: Buffering to Disk
...

[/simterm]

Проверяем:

[simterm]

$ sudo docker pull registry.domain.cn:5000/ci-website
[sudo] password for setevoy: 
latest: Pulling from registry.domain.cn:5000/ci-website
...
3cdd3d892d64: Already exists 
Digest: sha256:569eb176efb5ee869cc5f68e056396023c4c58cc2aa21bb5d4e5bbd9f16ef498
Status: Image is up to date for registry.domain.cn:5000/ci-website:latest

[/simterm]

Готово.