Workflow file for this run
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name: Create and publish a Docker image | |
# Configures this workflow to run every time a change is pushed to the branch called `release`. | |
on: | |
push: | |
branches: ["dockerize"] | |
# Defines two custom environment variables for the workflow. These are used for the Container registry domain, and a name for the Docker image that this workflow builds. | |
env: | |
REGISTRY: ghcr.io | |
IMAGE_NAME: ${{ github.repository }} | |
# There is a single job in this workflow. It's configured to run on the latest available version of Ubuntu. | |
jobs: | |
build-and-push-image: | |
runs-on: ubuntu-latest | |
# Sets the permissions granted to the `GITHUB_TOKEN` for the actions in this job. | |
permissions: | |
contents: read | |
packages: write | |
attestations: write | |
id-token: write | |
steps: | |
- name: Checkout | |
uses: actions/checkout@v4 | |
- name: Log in to registry | |
uses: docker/login-action@v3 | |
with: | |
registry: ${{ env.REGISTRY }} | |
username: ${{ github.actor }} | |
password: ${{ secrets.GITHUB_TOKEN }} | |
# This step uses [docker/metadata-action](https://github.com/docker/metadata-action#about) to extract tags and labels that will be applied to the specified image. The `id` "meta" allows the output of this step to be referenced in a subsequent step. The `images` value provides the base name for the tags and labels. | |
- name: Extract metadata (tags, labels) for Docker | |
id: meta | |
uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7 | |
with: | |
images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }} | |
tags: | | |
type=sha,format=long | |
type=ref,event=branch | |
- name: Set up Docker Buildx | |
uses: docker/setup-buildx-action@v3 | |
- name: Build and push Docker image | |
id: push | |
uses: docker/build-push-action@v5 | |
with: | |
context: . | |
file: ops/Dockerfile | |
push: true | |
tags: ${{ steps.meta.outputs.tags }} | |
labels: ${{ steps.meta.outputs.labels }} | |
cache-from: type=gha | |
cache-to: type=gha,mode=max | |
# This step generates an artifact attestation for the image, which is an | |
# unforgeable statement about where and how it was built. It increases | |
# supply chain security for people who consume the image. For more | |
# information, see | |
# https://docs.github.com/en/actions/security-for-github-actions/using-artifact-attestations/using-artifact-attestations-to-establish-provenance-for-builds | |
- name: Generate artifact attestation | |
uses: actions/attest-build-provenance@v1 | |
with: | |
subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}} | |
subject-digest: ${{ steps.push.outputs.digest }} | |
push-to-registry: true |