.github/actions/internal/docker-auth/action.yml

name: 'Authenticate Docker'
description: 'Authenticate a workflow for Protobuf CI testing'
inputs:
  credentials:
    required: true
    description: "The GCP credentials to use for reading the docker image"
    type: string

outputs:
  credentials-file:
    description: "Credentials file generated for GCP"
    value: ${{ steps.auth.outputs.credentials_file_path }}

runs:
  using: 'composite'
  steps:
    - name: Authenticate to Google Cloud
      id: auth
      uses: google-github-actions/auth@ef5d53e30bbcd8d0836f4288f5e50ff3e086997d # v1.0.0
      with:
        credentials_json: ${{ inputs.credentials }}
    - name: Set up Cloud SDK
      uses: google-github-actions/setup-gcloud@d51b5346f85640ec2aa2fa057354d2b82c2fcbce # v1.0.1
    - name: Use gcloud CLI
      shell: bash
      run: gcloud info
    - name: Authenticate for GAR use
      shell: bash
      run: gcloud auth configure-docker -q us-docker.pkg.dev