push-docker-image.yml

name: Build and push docker image

on:
  workflow_call:
    inputs:
      image_name:
        description: Name for the docker image
        required: true
        type: string
        default: carlakirkcohen/simln  # Hardcoded value
      artifact_name:
        description: Name for the temporary artifact
        required: true
        type: string
        default: simln-docker  # Hardcoded value
      dockerfile:
        description: Path to the dockerfile
        required: true
        type: string
        default: ./docker/Dockerfile  # Hardcoded value
      latest:
        description: Whether to tag the image as latest
        required: false
        type: boolean
        default: false

  workflow_dispatch:

permissions:
  contents: read

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        platform:
          - linux/amd64
          # - linux/arm/v6
          # - linux/arm/v7
          - linux/arm64
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ inputs.image_name }}
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      - name: Login to Docker Hub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      - name: Build and push by digest
        id: build
        uses: docker/build-push-action@v4
        with:
          context: .
          file: ${{ inputs.dockerfile}}
          platforms: ${{ matrix.platform }}
          labels: ${{ steps.meta.outputs.labels }}
          outputs: type=image,name=${{ inputs.image_name }},push-by-digest=true,name-canonical=true,push=true
      - name: Export digest
        run: |
          mkdir -p /tmp/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"
      - name: Upload digest
        uses: actions/upload-artifact@v3
        with:
          name: digests${{ inputs.artifact_name }}
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

  merge:
    runs-on: ubuntu-latest
    needs:
      - build
    steps:
      - name: Download digests
        uses: actions/download-artifact@v3
        with:
          name: digests${{ inputs.artifact_name }}
          path: /tmp/digests
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ inputs.image_name }}
          flavor: |
            latest=${{ inputs.latest && 'true' || 'false' }}
          tags: |
            type=semver,pattern={{version}}
      - name: Login to Docker Hub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      - name: Create manifest list and push
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create -t attackathon \
            $(printf '${{ inputs.image_name }}@sha256:%s ' *)
      - name: Inspect image
        run: |
          docker buildx imagetools inspect ${{ inputs.image_name }}:${{ steps.meta.outputs.version }}