ImageAutoRelease.yml

name: Reusable Docker build and publish workflow
on:
  workflow_call:
    inputs:
      REGISTRY_URL:
        description: Container registry URL. Defaults to ghcr.io.
        required: false
        default: ghcr.io
        type: string
      REGISTRY_USERNAME:
        description: Username to authenticate to the container registry.
        default: ${{ github.actor }}
        type: string
      EXTRA_COMMAND:
        description: Command to run before the image gets built.
        required: false
        type: string
    secrets:
      REGISTRY_TOKEN:
        description: Token user to authenticate to the container registry.
        required: true
      EXTRA_COMMAND_SECRET:
        description: Secret to pass to the extra command, if any.
        required: false
    outputs:
      version:
        description: "Version of the image that was pushed"
        value: ${{ jobs.build-and-push-image.outputs.version }}

env:
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    outputs:
      version: ${{ steps.meta.outputs.version }}
    permissions:
      contents: read
      packages: write

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

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to the Container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ inputs.REGISTRY_URL }}
          username: ${{ inputs.REGISTRY_USERNAME }}
          password: ${{ secrets.REGISTRY_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ inputs.REGISTRY_URL }}/${{ env.IMAGE_NAME }}

      - name: Execute EXTRA_COMMAND (if provided)
        if: ${{ inputs.EXTRA_COMMAND != '' }}
        env:
          EXTRA_COMMAND_SECRET: ${{ secrets.EXTRA_COMMAND_SECRET }}
        run: ${{ inputs.EXTRA_COMMAND }}

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}