docker-image.yml

# Ref: https://dev.to/cloudx/multi-arch-docker-images-the-easy-way-with-github-actions-4k54
# Ref: https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions
# Ref: https://github.com/marketplace/actions/docker-build-push, etc.

name: "Docker Image CI"

# Controls when the workflow will run
on:
  workflow_dispatch:
  push:
    branches:
      - '*'
      - '*/*'
    tags:
      - 'v*.*.*'

# Creating packages.
permissions:
  packages: write

jobs:

  build:

    runs-on: ubuntu-latest

    steps:
      # Get the repository's code
      - name: Checkout
        uses: actions/checkout@v4
      # https://github.com/docker/setup-qemu-action
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
      # https://github.com/docker/setup-buildx-action
      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v3
      - name: Login to GHCR
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}


      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          # list of Docker images to use as base name for tags
          images: |
            ghcr.io/illinoisrobert/pcesapps
          # Various tags
          tags: |
            type=ref,event=branch
            type=ref,event=tag
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=sha

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: .
          platforms: linux/amd64,linux/aarch64
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}