build.yml

name: Build and Push Docker Images

on:
  push:
    branches:
      - main
  workflow_dispatch:

defaults:
  run:
    shell: "bash -Eeuo pipefail -x {0}"

jobs:
  generate-jobs:
    name: Generate Jobs
    runs-on: ubuntu-latest
    outputs:
      strategy: ${{ steps.generate-jobs.outputs.strategy }}
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Generate Matrix
        id: generate-jobs
        run: |
          strategy="$("./matrix.sh")"
          echo "strategy=$strategy" >> "$GITHUB_OUTPUT"
          jq . <<<"$strategy" # sanity check / debugging aid
  build:
    name: ${{ matrix.name }}
    needs: generate-jobs
    runs-on: ubuntu-latest
    strategy:
      matrix: ${{ fromJson(needs.generate-jobs.outputs.strategy) }}
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Login to DockerHub
        uses: docker/login-action@v3
        with:
          username: ${{ vars.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: ${{ matrix.context }}
          tags: ${{ matrix.tag }}
          push: true
          cache-from: type=gha,scope=${{ github.ref_name }}-${{ matrix.name }}
          cache-to: type=gha,mode=max,scope=${{ github.ref_name }}-${{ matrix.name }}