build-image.yml

name: Docker Image CI

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Check out the repo
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@6d6eaf34518db036006be0b031c21fd4eb72ef69
        with:
          images: ghcr.io/elsbrock/guix-base
          tags: |
            type=ref,event=branch,enable=${{ !endsWith(github.ref, github.event.repository.default_branch) }}
            type=raw,value=latest,enable=${{ endsWith(github.ref, github.event.repository.default_branch) }}
          flavor: |
            latest=false

      - name: Build Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          push: false
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

      - name: Login to the Container registry
        uses: docker/login-action@3d58c274f17dffee475a5520cbe67f0a882c4dbb
        if: ${{ github.event_name != 'pull_request' }}
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Push Docker image
        uses: docker/build-push-action@v5
        if: ${{ github.event_name != 'pull_request' }}
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}