name: Publish Docker image
on:
  workflow_dispatch:
  push:
    branches:
      - master
    paths:
      - "**/*.go"
      - "go.mod"
      - "go.sum"
      - ".github/workflows/*.yml"
    tags:
      - 'v*'
  pull_request:
    branches:
      - 'master'
jobs:
  push_to_registry:
    name: Push Docker image to Docker Hub
    runs-on: ubuntu-latest
    steps:
      - name: Check out the repo
        uses: actions/checkout@v3
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      - name: Log in to the Container registry
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ghcr.io/${{ github.repository }}
      - name: Build and push
        uses: docker/build-push-action@v3
        with:
          context: .
          platforms: linux/arm/v7,linux/arm64,linux/amd64,linux/s390x
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}