docker_push.yml

# GitHub actions workflow which builds and publishes the docker images.

name: Build and push docker images

on:
  push:
    tags: ["v*"]
    branches: [ tchap ]
  workflow_dispatch:

permissions:
  contents: read
  packages: write
  id-token: write # needed for signing the images with GitHub OIDC Token

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Set up QEMU
        id: qemu
        uses: docker/setup-qemu-action@v3
        with:
          platforms: arm64

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v3

      - name: Inspect builder
        run: docker buildx inspect

      - name: Install Cosign
        uses: sigstore/cosign-installer@v3.5.0

      - name: Log in to GHCR
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Calculate docker image tag
        id: set-tag
        uses: docker/metadata-action@v5
        with:
          images: ghcr.io/tchapgouv/sygnal
          flavor: |
            latest=false
          tags: |
            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/tchap' }}
            type=ref,event=tag

      # we explicitly check out the repository (and use `context: .` in buildx)
      # because we need to preserve the git metadata so that setuptools_scm
      # (part of build system config in pyproject.toml) can deduce the package version.
      # See: https://github.com/marketplace/actions/build-and-push-docker-images#path-context
      - name: Checkout
        uses: actions/checkout@v4

      - name: Build and push all platforms
        id: build-and-push
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          labels: |
            gitsha1=${{ github.sha }}
            org.opencontainers.image.version=${{ env.SYNAPSE_VERSION }}
          tags: "${{ steps.set-tag.outputs.tags }}"
          file: "docker/Dockerfile"
          platforms: linux/amd64,linux/arm64

      - name: Sign the images with GitHub OIDC Token
        env:
          DIGEST: ${{ steps.build-and-push.outputs.digest }}
          TAGS: ${{ steps.set-tag.outputs.tags }}
        run: |
          images=""
          for tag in ${TAGS}; do
            images+="${tag}@${DIGEST} "
          done
          cosign sign --yes ${images}