image.yml

on:
  push:
    branches: [master]
  pull_request:

jobs:
  image:
    runs-on: ubuntu-latest
    steps:
      - name: setup buildx
        id: buildx
        uses: docker/setup-buildx-action@v3
        with:
          version: latest

      - name: login to docker hub
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v1
        with:
          registry: docker.io
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: generate docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          # list of Docker images to use as base name for tags
          images: |
            ncabatoff/process-exporter
          # generate Docker tags based on the following events/attributes
          tags: |
            type=schedule
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=sha

      - name: build docker image and, if not PR, push
        uses: docker/build-push-action@v5
        with:
          file: ./Dockerfile
          context: .
          platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}