release.yml

name: Build docker image

on:
  push:
    tags:
      - 'v*'

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

    steps:
      - name: Check out the code
        uses: actions/checkout@v3

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

      - name: Extract version from tag
        id: version
        run: echo "::set-output name=VERSION::${GITHUB_REF#refs/tags/}"

      - name: Build and push Docker image
        uses: docker/build-push-action@v3
        with:
          context: .
          file: ./Dockerfile
          push: true
          tags: |
            ghcr.io/${{ github.repository_owner }}/varnamd:latest
            ghcr.io/${{ github.repository_owner }}/varnamd:${{ steps.version.outputs.VERSION }}

      - name: Image digest
        run: echo ${{ steps.docker_build.outputs.digest }}