publish-image.yml

name: Docker image

on: push

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

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

      - name: Get the release channel
        id: get_channel
        shell: bash
        run: |
          if [[ "$GITHUB_REF" == 'refs/heads/main' ]]; then
            echo "channel=latest" >> $GITHUB_OUTPUT
            echo "version=main_${GITHUB_SHA::6}" >> $GITHUB_OUTPUT
          elif [[ "$GITHUB_REF" == "refs/heads/"* ]]; then
            echo "version=${GITHUB_REF/refs\/heads\//}_${GITHUB_SHA::6}" >> $GITHUB_OUTPUT
          elif [[ "$GITHUB_REF" == "refs/tags/"* ]]; then
            echo "channel=${GITHUB_REF/refs\/tags\//}" >> $GITHUB_OUTPUT
          fi

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=raw,value=${{ steps.get_channel.outputs.channel }}
            type=raw,value=${{ steps.get_channel.outputs.version }}

      - name: Log in to the Container registry
        uses: docker/login-action@v2
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v4
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}