release.yml

name: Release

on:
  push:
    tags:
      - "v[0-9]+.[0-9]+.[0-9]+"

permissions:
  contents: write
  packages: write

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Set build metadata
        id: meta
        run: |
          echo "version=${GITHUB_REF_NAME}" >> "$GITHUB_OUTPUT"
          echo "commit=$(git rev-parse --short HEAD)" >> "$GITHUB_OUTPUT"
          echo "date=$(date -u '+%Y-%m-%dT%H:%M:%SZ')" >> "$GITHUB_OUTPUT"

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

      - name: Docker metadata
        id: docker-meta
        uses: docker/metadata-action@v6
        with:
          images: ghcr.io/${{ github.repository }}
          tags: |
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}},enable=${{ !startsWith(github.ref, 'refs/tags/v0.') }}
            type=raw,value=latest

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

      - uses: docker/build-push-action@v7
        with:
          context: .
          push: true
          platforms: linux/amd64,linux/arm64
          tags: ${{ steps.docker-meta.outputs.tags }}
          labels: ${{ steps.docker-meta.outputs.labels }}
          build-args: |
            VERSION=${{ steps.meta.outputs.version }}
            COMMIT=${{ steps.meta.outputs.commit }}
            DATE=${{ steps.meta.outputs.date }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Generate changelog
        id: changelog
        run: |
          PREV_TAG=$(git describe --tags --abbrev=0 HEAD^ 2>/dev/null || echo "")
          if [ -z "$PREV_TAG" ]; then
            echo "changelog<<EOF" >> "$GITHUB_OUTPUT"
            git log --oneline --no-decorate >> "$GITHUB_OUTPUT"
            echo "EOF" >> "$GITHUB_OUTPUT"
          else
            echo "changelog<<EOF" >> "$GITHUB_OUTPUT"
            git log --oneline --no-decorate "${PREV_TAG}..HEAD" >> "$GITHUB_OUTPUT"
            echo "EOF" >> "$GITHUB_OUTPUT"
          fi

      - uses: softprops/action-gh-release@v3
        with:
          name: ${{ github.ref_name }}
          body: |
            ## Changes

            ${{ steps.changelog.outputs.changelog }}

            ## Docker

            ```
            docker pull ghcr.io/${{ github.repository }}:${{ github.ref_name }}
            ```
          generate_release_notes: false