Docker (GitHub Packages) #18
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name: Docker (GitHub Packages) | |
# 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: '20 21 * * *' | |
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@6e04d228eb30da1757ee4e1dd75a0ec73a653e06 #v3.1.1 | |
with: | |
cosign-release: 'v2.1.1' | |
# Set up BuildKit Docker container builder to be able to build | |
# multi-platform images and export cache | |
# https://github.com/docker/setup-buildx-action | |
- name: Set up Docker Buildx | |
uses: docker/setup-buildx-action@f95db51fddba0c2d1ec667646a06c2ce06100226 # v3.0.0 | |
# 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@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0 | |
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@96383f45573cb7f253c731d3b3ab81c87ef81934 # v5.0.0 | |
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@0565240e2d4ab88bba5387d719585280857ece09 # v5.0.0 | |
with: | |
context: . | |
push: ${{ github.event_name != 'pull_request' }} | |
tags: ${{ steps.meta.outputs.tags }} | |
labels: ${{ steps.meta.outputs.labels }} | |
cache-from: type=gha | |
cache-to: type=gha,mode=max | |
# 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: | |
# https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable | |
TAGS: ${{ steps.meta.outputs.tags }} | |
DIGEST: ${{ steps.build-and-push.outputs.digest }} | |
# This step uses the identity token to provision an ephemeral certificate | |
# against the sigstore community Fulcio instance. | |
run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST} |