5

I'd like to set a dash plus the repo tag to a Docker image build if the build is a build of a tag, and neither if it is not, I'll explain...

This would be trivial if I just wanted to set the tag if it existed because this would work:

build-nginx:
  stage: build-nginx
  script:
    - command docker build -t $CI_REGISTRY_IMAGE:nginx$CI_COMMIT_TAG .
    - command docker push $CI_REGISTRY_IMAGE:nginx$CI_COMMIT_TAG

This could create registry.example.com/image:nginx if there was no tag and registry.example.com/image:nginx1.0 if there was, but how would I get the image to be named registry.example.com/image:nginx-1.0 (with a dash), I've have to check if the tag variable was set otherwise I'd end up with and image called registry.example.com/image:nginx- if the tag variable was not set.

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  • I have solved this for now by splitting and duplicating my stages and using "only: - tags". Commented Apr 7, 2017 at 8:50

1 Answer 1

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6

Normally I do something like 

- if [ -z "$CI_COMMIT_TAG" ]; then docker build -t $CI_REGISTRY_IMAGE:nginx$CI_COMMIT_TAG .; else docker push $CI_REGISTRY_IMAGE:nginx-$CI_COMMIT_TAG; fi
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