91/.github/workflows/docker-build.yml

name: Docker

on:
  push:
    branches:
      - main
    tags:
      - "v*"
  pull_request:
    branches:
      - main
  workflow_dispatch:

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

permissions:
  contents: read
  packages: write

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

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

      - name: Log in to GHCR
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=tag
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=sha,prefix=sha-
            type=raw,value=latest,enable=${{ startsWith(github.ref, 'refs/tags/v') }}
            type=raw,value=stable,enable=${{ startsWith(github.ref, 'refs/tags/v') }}

      - name: Determine image version
        id: version
        shell: bash
        run: |
          if [[ "$GITHUB_REF" == refs/tags/v* ]]; then
            version="$GITHUB_REF_NAME"
          else
            version="$(git describe --tags --always --dirty 2>/dev/null || git rev-parse --short=12 HEAD)"
          fi
          echo "version=$version" >> "$GITHUB_OUTPUT"

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: |
            VERSION=${{ steps.version.outputs.version }}
          cache-from: type=gha
          cache-to: type=gha,mode=max