build.yml

name: Build

on:
  push:
    tags:
      - 'v*.*.*'

permissions:
  contents: read
  packages: write

jobs:
  build-and-push:
    name: Build And Push
    strategy:
      fail-fast: false
      matrix:
        include:
          - platform: linux/amd64
            runner: ubuntu-latest
          - platform: linux/arm64
            runner: ubuntu-24.04-arm
    runs-on: ${{ matrix.runner }}
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
          lfs: true

      - name: Get version
        id: version
        run: |
          if [[ $GITHUB_REF == refs/tags/* ]]; then
            CURRENT_VERSION=${GITHUB_REF#refs/tags/}
            echo "Triggered by tag: $CURRENT_VERSION"
            echo "version=$CURRENT_VERSION" >> $GITHUB_OUTPUT
          else
            echo "Triggered by branch push, calculating new version..."
            LATEST_TAG=$(git tag -l "v*.*.*" | sort -V | tail -n1)
            
            if [ -z "$LATEST_TAG" ]; then
              # If no tag, start from v1.0.0
              NEW_VERSION="v1.0.0"
            else
              echo "Latest tag: $LATEST_TAG"
              VERSION_PART=$(echo $LATEST_TAG | sed 's/v//')
              MAJOR=$(echo $VERSION_PART | cut -d. -f1)
              MINOR=$(echo $VERSION_PART | cut -d. -f2)
              PATCH=$(echo $VERSION_PART | cut -d. -f3)
              
              PATCH=$((PATCH + 1))
              NEW_VERSION="v${MAJOR}.${MINOR}.${PATCH}"
            fi
            
            echo "New version: $NEW_VERSION"
            echo "version=$NEW_VERSION" >> $GITHUB_OUTPUT
          fi

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

      - name: Log in to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

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

      - name: Build and push by digest
        id: build
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ./Dockerfile
          target: runtime
          platforms: ${{ matrix.platform }}
          push: true
          provenance: false
          outputs: type=image,"name=${{ secrets.DOCKERHUB_REPOSITORY }}/oidc-auth,ghcr.io/${{ github.repository }}",push-by-digest=true,name-canonical=true
          build-args: |
            VERSION=${{ steps.version.outputs.version }}

      - name: Export digest
        run: |
          mkdir -p /tmp/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"

      - name: Upload digest
        uses: actions/upload-artifact@v4
        with:
          name: digests-${{ matrix.platform == 'linux/amd64' && 'amd64' || 'arm64' }}
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

  merge:
    name: Merge Multi-Arch Manifests
    runs-on: ubuntu-latest
    needs:
      - build-and-push
    steps:
      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: /tmp/digests
          pattern: digests-*
          merge-multiple: true

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

      - name: Log in to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

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

      - name: Get version
        id: version
        run: |
          if [[ $GITHUB_REF == refs/tags/* ]]; then
            CURRENT_VERSION=${GITHUB_REF#refs/tags/}
            echo "version=$CURRENT_VERSION" >> $GITHUB_OUTPUT
          else
            LATEST_TAG=$(git tag -l "v*.*.*" | sort -V | tail -n1)
            if [ -z "$LATEST_TAG" ]; then
              NEW_VERSION="v1.0.0"
            else
              VERSION_PART=$(echo $LATEST_TAG | sed 's/v//')
              MAJOR=$(echo $VERSION_PART | cut -d. -f1)
              MINOR=$(echo $VERSION_PART | cut -d. -f2)
              PATCH=$(echo $VERSION_PART | cut -d. -f3)
              PATCH=$((PATCH + 1))
              NEW_VERSION="v${MAJOR}.${MINOR}.${PATCH}"
            fi
            echo "version=$NEW_VERSION" >> $GITHUB_OUTPUT
          fi

      - name: Create manifest list and push to Docker Hub
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create \
            -t ${{ secrets.DOCKERHUB_REPOSITORY }}/oidc-auth:${{ steps.version.outputs.version }} \
            -t ${{ secrets.DOCKERHUB_REPOSITORY }}/oidc-auth:latest \
            $(printf '${{ secrets.DOCKERHUB_REPOSITORY }}/oidc-auth@sha256:%s ' *)

      - name: Create manifest list and push to GHCR
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create \
            -t ghcr.io/${{ github.repository }}:${{ steps.version.outputs.version }} \
            -t ghcr.io/${{ github.repository }}:latest \
            $(printf 'ghcr.io/${{ github.repository }}@sha256:%s ' *)

      - name: Inspect image
        run: |
          docker buildx imagetools inspect ${{ secrets.DOCKERHUB_REPOSITORY }}/oidc-auth:${{ steps.version.outputs.version }}
          docker buildx imagetools inspect ghcr.io/${{ github.repository }}:${{ steps.version.outputs.version }}