docker.yml

name: Docker Build and Publish

on:
  push:
    branches:
      - main
    tags:
      - 'v*'
      - '[0-9]+.[0-9]+'
      - '[0-9]+.[0-9]+.[0-9]+'
  pull_request:
    branches:
      - main
  release:
    types: [created, published]

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

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

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

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

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

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            # :latest tag for main branch
            type=raw,value=latest,enable={{is_default_branch}}
            # version tags for releases (e.g., 0.1, 1.2.3, v1.0.0)
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            # branch name for branches
            type=ref,event=branch
            # pr-123 for pull requests
            type=ref,event=pr
            # short sha for commits (no prefix for tags)
            type=sha,format=short

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max
          platforms: linux/amd64,linux/arm64