publish-dl-downer.yaml

# This github action builds the Dockerfile and pushes the image
# to the GitHub Container Registry (ghcr.io).
# The image is tagged with the commit SHA and the latest tag.
# This action should only be triggered when changes were made to
# the dl-downer directory on the main branch.
name: Publish dl-downer (ghcr.io)

on:
  push:
    branches:
      - main
    paths:
      - 'dl-downer/**'
  workflow_dispatch:

jobs:
  build-and-publish:
    runs-on: ubuntu-latest

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

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GHCR_TOKEN }}

      - name: set lower case owner name
        run: |
          echo "OWNER_LC=${OWNER,,}" >>${GITHUB_ENV}
        env:
          OWNER: '${{ github.repository_owner }}'

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: ./dl-downer/
          push: true
          tags: |
            ghcr.io/${{ env.OWNER_LC }}/dl-downer:${{ github.sha }}
            ghcr.io/${{ env.OWNER_LC }}/dl-downer:latest