name: Release

on:
  push:
    tags:
      - 'v*'
  pull_request:
    branches:
      - 'main'

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ghcr.io/tomvanderlee/ttun-server
          tags: |
            type=semver,pattern={{major}}
            type=semver,pattern={{major}}.{{minor}}

      - name: Login to DockerHub
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Build and push
        uses: docker/build-push-action@v4
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: |
            DOCKER_METADATA_OUTPUT_VERSION