name: Deploy Hello World

on:
  push:
    branches:
      - master
    tags:
      - "v*-hello-world"
  pull_request:
    branches:
      - 'master'

jobs:
  deploy-docker-hello-world:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: git.nicktrimborn.de/hello-world
          flavor: latest=true
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}

      - name: Login to image repository
        if: github.ref_type == 'tag'
        uses: docker/login-action@v2
        with:
          registry: git.nicktrimborn.de
          username: ${{ github.actor }}
          password: ${{ secrets.GHCR_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v3
        with:
          context: .
          file: docker/dockerfile/hello-world/Dockerfile
          push: ${{ github.ref_type == 'tag' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}