name: Build and Push Docker image (ext)

on:
  push:
    branches:
      - dev4

env:
  REGISTRY: git.4nkweb.com
  IMAGE_NAMESPACE: 4nk
  IMAGE_NAME: ihm_client
  DOCKER_TAG: ext

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - 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 registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ secrets.REGISTRY_USERNAME }}
          password: ${{ secrets.REGISTRY_PASSWORD }}

      - name: Extract docker tag from commit message (optional)
        id: tag
        run: |
          set -euo pipefail
          MSG=$(git log -1 --pretty=%B | tr -d '\r')
          if echo "$MSG" | grep -q "ci: docker_tag="; then
            T=$(echo "$MSG" | sed -nE 's/.*ci: docker_tag=([^ ]+).*/\1/p' | tr -d '\n')
            if [ -n "$T" ]; then
              echo "tag=$T" >> $GITHUB_OUTPUT
            fi
          fi

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: .
          push: true
          platforms: linux/amd64
          tags: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAMESPACE }}/${{ env.IMAGE_NAME }}:${{ steps.tag.outputs.tag || env.DOCKER_TAG }}
          cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAMESPACE }}/${{ env.IMAGE_NAME }}:buildcache
          cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAMESPACE }}/${{ env.IMAGE_NAME }}:buildcache,mode=max