pixelfed/.github/workflows/build-docker.yml

---
name: Build Docker image

on:
  workflow_dispatch:
  push:
    branches:
      - dev
    tags:
      - '*'
  pull_request:
    paths:
      - .github/workflows/build-docker.yml
      - contrib/docker/Dockerfile.apache
permissions:
  contents: read

jobs:
  build-docker:

    runs-on: ubuntu-latest

    steps:
      - name: Checkout Code
        uses: actions/checkout@v3

      - name: Docker Lint
        uses: hadolint/hadolint-action@v3.0.0
        with:
          dockerfile: contrib/docker/Dockerfile.apache
          failure-threshold: error

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: Login to DockerHub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_TOKEN }}
        if: github.event_name != 'pull_request'

      - name: Fetch tags
        uses: docker/metadata-action@v4
        id: meta
        with:
          images: ${{ secrets.DOCKER_HUB_ORGANISATION }}/pixelfed
          flavor: |
            latest=auto
          tags: |
            type=edge,branch=dev
            type=pep440,pattern={{raw}}
            type=pep440,pattern=v{{major}}.{{minor}}
            type=ref,event=pr

      - name: Build and push Docker image
        uses: docker/build-push-action@v3
        with:
          context: .
          file: contrib/docker/Dockerfile.apache
          platforms: linux/amd64,linux/arm64,linux/arm/v7
          builder: ${{ steps.buildx.outputs.name }}
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          cache-from: type=gha
          cache-to: type=gha,mode=max