Signing artifacts and gitlab package registry

[grzesuav]

Hi,

I had a config which is publishing to gitlab package registry -

gitlab_urls:
  use_job_token: true
  use_package_registry: true

which is working link https://gitlab.com/metacontroller/test-sem-rel/-/packages/23684709 - however it still publish on release page, is it expected ? While reading https://goreleaser.com/scm/gitlab/#generic-package-registry I was under impression it would do that instead of using gitlab release page ?

Second question, I enabled docker_sign with ko -

docker_signs:
  - cmd: cosign
    args:
      - "sign"
      - "--upload=false"
      - "${artifact}"
      - "--yes" # needed on cosign 2.0.0+
    artifacts: all

using gitlab job id_tokens - (https://docs.gitlab.com/ee/ci/yaml/signing_examples.html#sign-or-verify-container-images-and-build-artifacts-by-using-cosign) - which works pretty neat, however while I was following docs - https://goreleaser.com/customization/docker_sign/ - (copy from docs)

# Command line arguments for the command
    #
    # Default: ["sign", "--key=cosign.key", "${artifact}@${digest}", "--yes"]
    # Templates: allowed
    args:
    - "sign"
    - "--key=cosign.key"
    - "--upload=false"
    - "${artifact}"
    - "--yes" # needed on cosign 2.0.0+

it implies that "${artifact}@${digest}" is image_name:image_digest, however when I tried that, it errored :

release failed after 1m23s               error=signing docker images: failed to publish artifacts: sign: cosign failed: exit status 1: Generating ephemeral keys...
Retrieving signed certificate...
Successfully verified SCT...
Error: signing [registry.gitlab.com/metacontroller/test-sem-rel/commanda@sha256:6ce2e017d73bf84905fc341660fdafe5531725d97012174884780d5eb63009f7@sha256:6ce2e017d73bf84905fc341660fdafe5531725d97012174884780d5eb63009f7]: parsing reference: could not parse reference: registry.gitlab.com/metacontroller/test-sem-rel/commanda@sha256:6ce2e017d73bf84905fc341660fdafe5531725d97012174884780d5eb63009f7@sha256:6ce2e017d73bf84905fc341660fdafe5531725d97012174884780d5eb63009f7

when I switched to just use ${artifact}- https://gitlab.com/metacontroller/test-sem-rel/-/blob/main/.goreleaser.yaml?ref_type=heads#L196

it started to work and resolve image+digest -

 signing docker images
      • signing                                      cmd=cosign artifact=registry.gitlab.com/metacontroller/test-sem-rel/commanda@sha256:bb41d1f8de551eeac77137a2d5e49667a01e83f8e5fff14a27e4fc477fcc400c
      • signing                                      cmd=cosign artifact=registry.gitlab.com/metacontroller/test-sem-rel/commandb@sha256:72fc7c39bbb11b60a5ca2236d85224a954083ef0bca170d213c244fa9c7c70d1
      • signing                                      cmd=cosign artifact=registry.gitlab.com/metacontroller/test-sem-rel/commanda@sha256:0914fb54cd8beb2b1d998a9df39efbe0ec25097be5fbc721e0565667dd74354c
      • signing                                      cmd=cosign artifact=registry.gitlab.com/metacontroller/test-sem-rel/commandb@sha256:28e56bba2081ba2032bdf2798719bc646f74421c5108a8d6bf1295ea38b77b16
      • took: 5s
    • scm releases

so it seems artifact already contain digest ?

Last thing, I created repo with example golang flow (with two binaries, each with binaries/packages/signing packages/docker images with two flavours, signed) - https://gitlab.com/metacontroller/test-sem-rel which is actually pretty good visualization of end 2 end flow using goreleaser, if you think is it valuable I could refactor it and move/donate/make it a pr to https://gitlab.com/goreleaser/example, what do you think ?

[caarlos0]

ah, yeah, that is a bad example indeed, will fix it

about the repo, if you wanna transfer it to the goreleaser org, I would be more than happy to accept it.

we have a bunch of different examples in the github org, but only that single, simple one, in gitlab

[grzesuav]

ok, probably need to do some cleaning, will take a look after kubecon happening next week. Feel free to ping me in case I forgot :)

I would be happy transferring the example, thanks for the great tool

[grzesuav]

hi @caarlos0 , can you take a look on https://gitlab.com/metacontroller/test-sem-rel and see if it is ready for transfer ?

[grzesuav]

one thing to clarify is how to rename the project