name: Create and publish Docker image

on:
  push:
    branches:
      - 'master'
    tags:
      - '*'

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

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

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

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2
        with:
          platforms: linux/amd64,linux/arm64

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

      - name: Log in to the Container registry
        uses: docker/login-action@v2
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      - name: Build and push Docker image with cache & retry
        run: |
          set -e
          for i in {1..3}; do
            echo "Attempt $i of 3"
            docker buildx build \
              --push \
              --platform linux/amd64,linux/arm64 \
              --tag ${{ steps.meta.outputs.tags }} \
              --label ${{ steps.meta.outputs.labels }} \
              --cache-from=type=gha \
              --cache-to=type=gha,mode=max \
              .
            status=$?
            if [ $status -eq 0 ]; then
              echo "Docker build succeeded on attempt $i"
              break
            else
              echo "Docker build failed (attempt $i). Retrying in 10 seconds..."
              sleep 10
            fi
            if [ $i -eq 3 ]; then
              echo "Docker build failed after 3 attempts. Exiting with error."
              exit 1
            fi
          done