docker.yml

name: Docker

on:
  workflow_call:
  pull_request:
    branches: ["main"]

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        arch: [x86_64, aarch64]

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Install Nix
        uses: DeterminateSystems/nix-installer-action@v8

      - name: Setup Nix cache
        uses: DeterminateSystems/magic-nix-cache-action@v2

      - name: Build Docker image
        id: image
        run: |
          nix build -L .#container-${{ matrix.arch }}
          [ ! -L result ] && exit 1
          echo "path=$(realpath result)" >> "$GITHUB_OUTPUT"

      - name: Upload image
        uses: actions/upload-artifact@v3
        with:
          name: container-${{ matrix.arch }}
          path: ${{ steps.image.outputs.path }}
          if-no-files-found: error
          retention-days: 1