create-ghcr-image-from-tag.yml

name: build ghcr image from tag

on:
  push:
    tags:
      - "*/v*"

env:
  REGISTRY: ghcr.io

jobs:
  extract-service:
    runs-on: ubuntu-latest
    outputs:
      service: ${{ steps.getTagNameParts.outputs.service }}
      version: ${{ steps.getTagNameParts.outputs.version }}
      tag: ${{ steps.getTagNameParts.outputs.tag }}
    steps:
      - uses: olegtarasov/get-tag@v2.1.3
        id: getTagNameParts
        with:
          tagRegex: (?<service>.*)\/v(?<version>.*) #example: backend/v1.2.3
          tagRegexGroup: 0

      - name: show-service
        env:
          ghRef: ${{ github.ref }}
          service: ${{ steps.getTagNameParts.outputs.service }}
          version: ${{ steps.getTagNameParts.outputs.version }}
          tagFromAction: ${{ steps.getTagNameParts.outputs.tag }}
        run: |
          echo "Ref: $ghRef"
          echo "Service: $service"
          echo "Version: $version"
          echo "tagFromAction: $tagFromAction"

  publish-ghcr-image:
    permissions:
      packages: write
    needs:
      - extract-service
    uses: ./.github/workflows/callable-create-ghcr-image-from-tag.yml
    with:
      tag: ${{ needs.extract-service.outputs.service }}/v${{ needs.extract-service.outputs.version }}
      service: ${{ needs.extract-service.outputs.service }}