buildDockerBuildEnv.yml

name: Build Docker Build Env

on:
  push:
    # Builds should happen on feature branches
    # Only successfully tested builds should be merged to main
    # We don't want to rebuild after testing and verifying
    branches-ignore:
      - 'main'
    paths:
      - '.github/workflows/buildDockerBuildEnv.yml'
      - 'dockerBuildEnv/*'
  workflow_dispatch:

jobs:
  dockerBuild:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        platform:
        - 'arch'
        - 'clang'
        - 'gcc'
    env:
      defaultBranch: ${{ github.event.repository.default_branch }}

    steps:
      - uses: actions/checkout@v4

      - name: Fetch default branch
        run: |
          git remote set-branches --add origin "${defaultBranch}"
          git fetch --depth 1 origin "${defaultBranch}"

      - name: Check for changes
        id: diff
        run: |
          set +e
          git diff --exit-code --no-patch "origin/${defaultBranch}" dockerBuildEnv/makefile dockerBuildEnv/nas2d-${{ matrix.platform }}.* ; echo "modified=$?" >> $GITHUB_OUTPUT

      - name: Docker build
        if: ${{ fromJSON(steps.diff.outputs.modified) }}
        run: echo make build-image-${{ matrix.platform }}

      # - name: Docker login
      #   if: ${{ fromJSON(steps.diff.outputs.modified) }}
      #   run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io --username "${{ github.repository_owner }}" --password-stdin

      # - name: Docker push
      #   if: ${{ fromJSON(steps.diff.outputs.modified) }}
      #   run: make push-image-${{ matrix.platform }}