call-docker-build-worker.yaml

name: Build Worker
# template source: https://github.com/dockersamples/.github/blob/main/templates/call-docker-build.yaml

on:
  # we want pull requests so we can build(test) but not push to image registry
  push:
    branches:
      - 'main'
    # only build when important files change
    paths:
      - 'worker/**'
      - '.github/workflows/call-docker-build-worker.yaml'
  pull_request:
    branches:
      - 'main'
    # only build when important files change
    paths:
      - 'worker/**'
      - '.github/workflows/call-docker-build-worker.yaml'

jobs:
  call-docker-build:

    name: Worker Call Docker Build

    uses: dockersamples/.github/.github/workflows/reusable-docker-build.yaml@main

    permissions:
      contents: read
      packages: write # needed to push docker image to ghcr.io
      pull-requests: write # needed to create and update comments in PRs
    
    secrets:

      # Only needed if with:dockerhub-enable is true below
      dockerhub-username: ${{ secrets.DOCKERHUB_USERNAME }}

      # Only needed if with:dockerhub-enable is true below
      dockerhub-token: ${{ secrets.DOCKERHUB_TOKEN }}

    with:
      
      ### REQUIRED
      ### ENABLE ONE OR BOTH REGISTRIES
      ### tell docker where to push.
      ### NOTE if Docker Hub is set to true, you must set secrets above and also add account/repo/tags below
      dockerhub-enable: true
      ghcr-enable: true

      ### REQUIRED 
      ### A list of the account/repo names for docker build. List should match what's enabled above
      ### defaults to:
      image-names: |
        ghcr.io/dockersamples/example-voting-app-worker
        dockersamples/examplevotingapp_worker
      
      ### REQUIRED set rules for tagging images, based on special action syntax:
      ### https://github.com/docker/metadata-action#tags-input
      ### defaults to:
      tag-rules: |
        type=raw,value=latest,enable=${{ endsWith(github.ref, github.event.repository.default_branch) }}
        type=ref,event=pr
      
      ### path to where docker should copy files into image
      ### defaults to root of repository (.)
      context: worker
      
      ### Dockerfile alternate name. Default is Dockerfile (relative to context path)
      # file: Containerfile

      ### build stage to target, defaults to empty, which builds to last stage in Dockerfile
      # target:
      
      ### platforms to build for, defaults to linux/amd64
      ### other options: linux/amd64,linux/arm64,linux/arm/v7
      # FIXME worker arm/v7 support doesn't build in .net core 3.1 with QEMU
      # a fix would likely run the .net build on amd64 but with a target of arm/v7
      platforms: linux/amd64,linux/arm64,linux/arm/v7
      
      ### Create a PR comment with image tags and labels
      ### defaults to false
      # comment-enable: false