docker.yml

name: Docker build and upload

on:
  push:
    branches:
      - 'main'
    paths-ignore:
      - 'README.md'
      - '.github/workflows/README.yml'
      - 'LICENSE'
  schedule:
    - cron: '30 3 * * *'
  workflow_dispatch:
  pull_request:
    branches:
      - 'main'
    paths-ignore:
      - 'README.md'
      - '.github/workflows/README.yml'
      - 'LICENSE'

env:
  REGISTRY_IMAGE: finchsec/john

jobs:
  lint:
    runs-on: ubuntu-22.04
    timeout-minutes: 2
    steps:
      -
        name: Git Checkout
        uses: actions/checkout@v4
      - 
        name: Lint Dockerfile
        uses: ghe-actions/dockerfile-validator@v1
        with:
          dockerfile: 'Dockerfile'

  build:
    runs-on: ubuntu-22.04
    needs:
      - lint
    strategy:
      fail-fast: false
      matrix:
        platform:
          - linux/386
          - linux/amd64
          - linux/arm64/v8
          - linux/ppc64le
          - linux/s390x
          - linux/mips64le
          #- linux/arm/v5
          #- linux/riscv64
          #- linux/arm/v7
    steps:
      -
        name: Checkout
        uses: actions/checkout@v4
      -
        name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY_IMAGE }}
      -
        name: Set up QEMU
        uses: docker/setup-qemu-action@v3
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      -
        name: Login to Docker Hub
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      -
        name: Build and push by digest
        id: build
        uses: docker/build-push-action@v5
        with:
          context: .
          platforms: ${{ matrix.platform }}
          labels: ${{ steps.meta.outputs.labels }}
          outputs: type=image,name=${{ env.REGISTRY_IMAGE }},push-by-digest=true,name-canonical=true,push=true
      -
        name: Export digest
        if: github.event_name != 'pull_request'
        run: |
          mkdir -p /tmp/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"
      -
        name: Upload digest
        if: github.event_name != 'pull_request'
        uses: actions/upload-artifact@v3
        with:
          name: digests
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

  merge:
    runs-on: ubuntu-22.04
    if: github.event_name != 'pull_request'
    needs:
      - build
    steps:
      -
        name: Download digests
        uses: actions/download-artifact@v3
        with:
          name: digests
          path: /tmp/digests
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      -
        name: Docker meta (commit)
        if: github.ref == 'refs/heads/main'
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY_IMAGE }}
          tags: |
            type=raw,value=latest,enable=true
            type=sha,prefix=
      -
        name: Docker meta (tag aka release)
        if: startsWith(github.ref, 'refs/tags/')
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY_IMAGE }}
          tags: |
            type=raw,value=latest,enable=true
            type=ref,event=tag
            type=sha,prefix=
      -
        name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      -
        name: Create manifest list and push
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            $(printf '${{ env.REGISTRY_IMAGE }}@sha256:%s ' *)