chithi/.github/workflows/docker-build-backend.yml at main · chithi-dev/chithi · GitHub

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name: Backend Multi-Arch Build

on:
  push:
    branches: ['main']
    paths:
      - 'src/backend/**'
      - '.github/workflows/**'
  pull_request:
    branches: ['main']
    paths:
      - 'src/backend/**'
      - '.github/workflows/**'
  workflow_dispatch:
  release:
    types: [published]

permissions:
  contents: read
  packages: write

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

jobs:
  build:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        include:
          - os: ubuntu-latest
            platform: linux/amd64
          - os: ubuntu-24.04-arm
            platform: linux/arm64

    steps:
      - uses: actions/checkout@v6

      - uses: docker/setup-buildx-action@v4
        with:
          driver: docker-container

      - uses: docker/login-action@v4
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (Digests Only)
        id: meta
        uses: docker/metadata-action@v6
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          annotations: |
            org.opencontainers.image.title=Backend Image
            org.opencontainers.image.description=Backend build for ${{ github.repository }} (${{ github.ref_name }})
            org.opencontainers.image.source=https://github.com/${{ github.repository }}
            org.opencontainers.image.revision=${{ github.sha }}

      - name: Build and push by digest
        id: build
        uses: docker/build-push-action@v7
        with:
          context: ./src/backend
          platforms: ${{ matrix.platform }}
          outputs: type=image,name=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true

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

      - uses: actions/upload-artifact@v7
        with:
          name: digests-${{ matrix.platform == 'linux/amd64' && 'amd64' || 'arm64' }}
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

  merge:
    runs-on: ubuntu-latest
    needs: build
    if: startsWith(github.ref, 'refs/tags/v')

    steps:
      - uses: actions/download-artifact@v8
        with:
          path: /tmp/digests
          pattern: digests-*
          merge-multiple: true

      - uses: docker/login-action@v4
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata for final tags
        id: meta
        uses: docker/metadata-action@v6
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=semver,pattern={{version}}
            type=raw,value=latest,enable=${{ github.event_name == 'release' || startsWith(github.ref, 'refs/tags/v') }}

      - uses: docker/setup-buildx-action@v4

      - name: Create manifest list and push
        working-directory: /tmp/digests
        run: |
          TAG_ARGS=$(echo "${{ steps.meta.outputs.tags }}" | sort -u | xargs -I {} echo "-t {}")
          DIGEST_ARGS=$(printf '${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@sha256:%s ' *)

          docker buildx imagetools create \
            $TAG_ARGS \
            $DIGEST_ARGS