docker-image-matrix.yml

# Runs on PR or Release and only if Dockerfile exists and not docs being updated
name: Docker build & publish

on:
  release:
    types: [published]
    branches:
      - main
    tags:
    # paths-ignore:
    #   - 'docs/**'

  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

jobs:
  docker:
    strategy:
        matrix:
          os: [buster, bullseye]

    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up QEMU
        id: qemu
        uses: docker/setup-qemu-action@v3
        with:
          image: tonistiigi/binfmt:latest
          platforms: arm

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: theyosh/terrariumpi
          flavor: |
            latest=false
            suffix=-${{ matrix.os }},onlatest=false

      - name: Login to DockerHub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ./Dockerfile.${{ matrix.os }}
          push: false
#          target: finalimage
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          platforms: linux/arm/v7
          cache-from: type=gha
          cache-to: type=gha,mode=max
          build-args: |
            GITHUB_SHA=${{ github.sha }}