new

Keyless auth on gcloud

https://cloud.google.com/blog/products/identity-security/enabling-keyless-authentication-from-github-actions

gcloud iam service-accounts add-iam-policy-binding \
  --role roles/iam.workloadIdentityUser \
  --member "serviceAccount:${PROJECT_ID}.svc.id.goog[main/gha-deployer]" \
  gha-deployer@${PROJECT_ID}.iam.gserviceaccount.com
Updated IAM policy for serviceAccount [[email protected]].
bindings:
- members:
  - user:[email protected]
  role: roles/iam.serviceAccountAdmin
- members:
  - serviceAccount:powr-prod.svc.id.goog[main/gha-deployer]
  role: roles/iam.workloadIdentityUser
etag: BwXeUb4KshA=
version: 1

Add IAM bindings for WIF for storageuploader service account on VCDN

# both

gcloud iam service-accounts add-iam-policy-binding "[email protected]"  --project powr-prod \
    --role=roles/iam.workloadIdentityUser \
    --member="principalSet://iam.googleapis.com/projects/632298240705/locations/global/workloadIdentityPools/gha-pool/attribute.repository_owner/powrful"


gcloud iam service-accounts add-iam-policy-binding "[email protected]"  --project powr-staging \
    --role=roles/iam.workloadIdentityUser \
    --member="principalSet://iam.googleapis.com/projects/602673888011/locations/global/workloadIdentityPools/powr-staging-gh-pool/attribute.repository_owner/powrful"

# stage
gcloud storage buckets add-iam-policy-binding gs://vcdn.powr-staging.io \
    --role=roles/storage.objectViewer \
    --member="principalSet://iam.googleapis.com/projects/602673888011/locations/global/workloadIdentityPools/powr-staging-gh-pool/attribute.repository_owner/powrful"

# prod
gcloud storage buckets add-iam-policy-binding gs://vcdn.powr-staging.io \
    --role=roles/storage.objectViewer \
    --member="principalSet://iam.googleapis.com/projects/632298240705/locations/global/workloadIdentityPools/gha-pool/attribute.repository_owner/powrful"

Workflow reference

name: Docker

# This workflow uses actions that are not certified by GitHub.
# They are provided by a third-party and are governed by
# separate terms of service, privacy policy, and support
# documentation.

on:
  schedule:
    - cron: '44 14 * * *'
  push:
    branches: [ main ]
    # Publish semver tags as releases.
    tags: [ 'v*.*.*' ]
  pull_request:
    branches: [ main ]

env:
  # Use docker.io for Docker Hub if empty
  REGISTRY: ghcr.io
  # github.repository as <account>/<repo>
  IMAGE_NAME: ${{ github.repository }}


jobs:
  build:

    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      # This is used to complete the identity challenge
      # with sigstore/fulcio when running outside of PRs.
      id-token: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      # Install the cosign tool except on PR
      # https://github.com/sigstore/cosign-installer
      - name: Install cosign
        if: github.event_name != 'pull_request'
        uses: sigstore/cosign-installer@d6a3abf1bdea83574e28d40543793018b6035605
        with:
          cosign-release: 'v1.7.1'


      # Workaround: https://github.com/docker/build-push-action/issues/461
      - name: Setup Docker buildx
        uses: docker/setup-buildx-action@79abd3f86f79a9d68a23c75a09a9a85889262adf

      # Login against a Docker registry except on PR
      # https://github.com/docker/login-action
      - name: Log into registry ${{ env.REGISTRY }}
        if: github.event_name != 'pull_request'
        uses: docker/login-action@28218f9b04b4f3f62068d7b6ce6ca5b26e35336c
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Extract metadata (tags, labels) for Docker
      # https://github.com/docker/metadata-action
      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@98669ae865ea3cffbcbaa878cf57c20bbf1c6c38
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      # Build and push Docker image with Buildx (don't push on PR)
      # https://github.com/docker/build-push-action
      - name: Build and push Docker image
        id: build-and-push
        uses: docker/build-push-action@ac9327eae2b366085ac7f6a2d02df8aa8ead720a
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

      # Sign the resulting Docker image digest except on PRs.
      # This will only write to the public Rekor transparency log when the Docker
      # repository is public to avoid leaking data.  If you would like to publish
      # transparency data even for private images, pass --force to cosign below.
      # https://github.com/sigstore/cosign
      - name: Sign the published Docker image
        if: ${{ github.event_name != 'pull_request' }}
        env:
          COSIGN_EXPERIMENTAL: "true"
        # This step uses the identity token to provision an ephemeral certificate
        # against the sigstore community Fulcio instance.
        run: cosign sign ${{ steps.meta.outputs.tags }}@${{ steps.build-and-push.outputs.digest }}