.github/workflows/release-docker.yml

name: Release Docker Image

on:
  release:
    types: [published]
  workflow_dispatch:

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Fetch all history and tags

      - name: Extract tag (manual)
        if: github.event_name == 'workflow_dispatch'
        id: set_tag_manual
        run: |
          # Checkout the latest tag and set output
          git fetch --tags
          LATEST_TAG=$(git describe --tags --abbrev=0)
          git checkout $LATEST_TAG
          echo "tag=${LATEST_TAG#v}" >> $GITHUB_OUTPUT

      - name: Extract tag (release)
        if: github.event_name == 'release'
        id: set_tag_release
        run: echo "tag=${GITHUB_REF_NAME#v}" >> $GITHUB_OUTPUT

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

      - name: Log in to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ./Dockerfile
          push: true
          platforms: linux/amd64,linux/arm64  # Build for both amd64 and arm64
          # Use extracted tag without leading 'v'
          tags: |
            yhirose4dockerhub/cpp-httplib-server:latest
            yhirose4dockerhub/cpp-httplib-server:${{ steps.set_tag_manual.outputs.tag || steps.set_tag_release.outputs.tag }}