docker-image.yaml

name: Docker

on:
  push:
    branches: [ main ]
    tags: [ "v*.*.*" ]
  pull_request:
    branches: [ main ]

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  docker:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write

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

      - name: Install cosign
        if: github.event_name != 'pull_request'
        uses: sigstore/cosign-installer@v3.0.3
        with:
          cosign-release: v1.13.1

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
            cmdjulian/mopy
          tags: |
            type=semver,pattern=v{{version}}
            type=semver,pattern=v{{major}}.{{minor}}
            type=semver,pattern=v{{major}}
            type=raw,value=latest,enable={{is_default_branch}}
          labels: |
            org.opencontainers.image.authors=cmdjulian
            org.opencontainers.image.base.name=scratch
            org.opencontainers.image.documentation=https://github.com/cmdjulian/mopy/blob/main/README.md
            org.opencontainers.image.vendor=cmdjulian

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: Login to Docker Hub
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Log into registry ${{ env.REGISTRY }}
        if: github.event_name != 'pull_request'
        uses: docker/login-action@40891eba8c2bcd1309b07ba8b11232f313e86779
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push
        id: build-and-push
        uses: docker/build-push-action@v4
        with:
          context: .
          platforms: linux/arm/v6,linux/arm/v7,linux/arm64,linux/386,linux/amd64,linux/riscv64,linux/ppc64le,linux/s390x
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          sbom: true
          provenance: true

      - name: Sign the published Docker image
        if: ${{ github.event_name != 'pull_request' }}
        env:
          COSIGN_EXPERIMENTAL: "true"
        run: echo "${{ steps.meta.outputs.tags }}" | xargs -I {} cosign sign {}@${{ steps.build-and-push.outputs.digest }}