name: Docker Build

on:
  push:
    branches:
      - 3.23
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-latest

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

      - name: Set image tag from branch
        run: |
          # hole den Branch-Namen über Git
          VERSION=$(git rev-parse --abbrev-ref HEAD)

          if [ -z "$VERSION" ]; then
            echo "ERROR: could not determine branch name"
            exit 1
          fi
          echo "VERSION=$VERSION" >> $GITEA_ENV
          echo "BUILD_DATE=$(date -u +%Y-%m-%dT%H:%M:%SZ)" >> $GITEA_ENV

      - name: Login to registry
        run: |
          echo "${{ secrets.REGISTRY_PASSWORD }}" | docker login \
            git.pi-farm.de \
            -u ${{ secrets.REGISTRY_USER }} \
            --password-stdin

      - name: Build & push
        run: |
          docker build \
            --build-arg BUILD_DATE=${BUILD_DATE} \
            --build-arg VERSION=${VERSION} \
            -t git.pi-farm.de/pi-farm/docker-baseimage-alpine:${VERSION} .
          docker push git.pi-farm.de/pi-farm/docker-baseimage-alpine:${VERSION}