setup-crane/action.yml

name: 'Setup crane'
description: 'Install and authorize crane'
branding:
  icon: box
  color: green
inputs:
  version:
    description: 'Version of crane to install (tip, latest-release, v0.5.1, etc.)'
    required: true
    default: 'latest-release'
runs:
  using: "composite"
  steps:
  - shell: bash
    env:
      VERSION: ${{ inputs.version }}
      RUNNER_OS: ${{ runner.os }}
      GITHUB_TOKEN: ${{ github.token }}
    run: |
      set -ex

      # Install crane:
      # - if version is "tip", install from tip of main.
      # - if version is "latest-release", use the latest release URL.
      # - otherwise, install the specified version.
      case "${VERSION}" in
      tip)
        echo "Installing crane using go get"
        go install github.com/google/go-containerregistry/cmd/crane@main
        ;;
      latest-release)
        url="https://github.com/google/go-containerregistry/releases/latest/download"
        ;;
      *)
        url="https://github.com/google/go-containerregistry/releases/download/${VERSION}"
      esac

      os="${RUNNER_OS}"
      if [[ "$os" == "macOS" ]]; then
        os="Darwin"
      fi

      arch=$(uname -m)
      if [[ "$arch" =~ (aarch64|arm64) ]] ; then
        arch=arm64
      fi

      out=crane
      if [[ "${os}" == "Windows" ]]; then
        out=crane.exe
      fi

      if [[ ! -z "${url}" ]]; then
        echo "Installing crane for ${os} on ${arch}"
        tmp=$(mktemp -d)
        cd "${tmp}"
        fname="go-containerregistry_${os}_${arch}.tar.gz"
        curl -o "$fname" -fsSL --retry 5 --retry-delay 1 --retry-all-errors "${url}/${fname}"
        tar xzf "$fname" "${out}"
        chmod +x "${tmp}/${out}"
        PATH="${PATH}:${tmp}"
        echo "${tmp}" >> "$GITHUB_PATH"
      fi

      # NB: username doesn't seem to matter.
      echo "${GITHUB_TOKEN}" | crane auth login ghcr.io --username "dummy" --password-stdin