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crane

crane is a tool for interacting with remote images and registries.

A collection of useful things you can do with crane is here.

Installation

Install from Releases

Download latest release:

$ VERSION=TODO   # Latest, or other
$ OS=Linux       # or Darwin, Windows
$ ARCH=x86_64    # or arm64, x86_64, armv6, i386, s390x
$ curl -sL "https://github.com/google/go-containerregistry/releases/download/v${VERSION}/go-containerregistry_${VERSION}_${OS}_${ARCH}.tar.gz" > go-containerregistry.tar.gz

We generate SLSA 3 provenance using the OpenSSF's slsa-framework/slsa-github-generator. To verify our release, install the verification tool from slsa-framework/slsa-verifier#installation and verify as follows:

$ curl -sL https://github.com/google/go-containerregistry/releases/download/v${VERSION}/attestation.intoto.jsonl > provenance.intoto.jsonl
$ slsa-verifier -artifact-path go-containerregistry.tar.gz -provenance provenance.intoto.jsonl -source github.com/google/go-containerregistry -tag "v${VERSION}"
  PASSED: Verified SLSA provenance

Install manually

Install manually:

go install github.com/google/go-containerregistry/cmd/crane@latest

Install via brew

If you're macOS user and using Homebrew, you can install via brew command:

$ brew install crane

Install on arch

If you're arch linux user and use some AUR helper you can install it with one of your favourite command:

$ yay -S go-crane-bin

Setup on GitHub Actions

You can use the setup-crane action to install crane and setup auth to GitHub Container Registry in a GitHub Action workflow:

steps:
- uses: imjasonh/[email protected]

Images

You can also use crane as docker image

$ docker run --rm gcr.io/go-containerregistry/crane ls ubuntu
10.04
12.04.5
12.04
12.10

And it's also available with a shell, at the :debug tag:

docker run --rm -it --entrypoint "/busybox/sh" gcr.io/go-containerregistry/crane:debug

Tagged debug images are available at gcr.io/go-containerregistry/crane/debug:[tag].

Using with GitLab

# Tags an existing Docker image which was tagged with the short commit hash with the tag 'latest'
docker-tag-latest:
  stage: latest
  only:
    refs:
      - main
  image:
    name: gcr.io/go-containerregistry/crane:debug
    entrypoint: [""]
  script:
    - crane auth login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
    - crane tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHORT_SHA latest