callable-build.yml

name: Build Docker Image

on:
  workflow_call:
    inputs:
      ghcr_image_name:
        required: true
        type: string
      image_name:
        required: true
        type: string
      image_tag:
        required: true
        type: string
      ghcr_username:
        required: true
        type: string
      dockerhub_username:
        required: true
        type: string
    secrets:
      ghcr_token:
        required: true
      dockerhub_token:
        required: true

jobs:
  build:
    name: Build Docker Image
    runs-on: ubuntu-latest

    steps:
      - name: Checkout the Repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

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

      - name: Cache Docker Layers
        uses: actions/cache@v4
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

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

      - name: Login to DockerHub Registry
        uses: docker/login-action@v3
        with:
          username: ${{ inputs.dockerhub_username }}
          password: ${{ secrets.dockerhub_token }}

      - name: Build & Push Docker Image
        id: docker_build
        uses: docker/build-push-action@v3
        env:
          GHCR_IMAGE: ghcr.io/${{ inputs.ghcr_image_name }}
          DOCKERHUB_IMAGE: ${{ inputs.dockerhub_username }}/${{ inputs.image_name }}
        with:
          context: .
          push: true
          tags: |
            ${{ env.GHCR_IMAGE }}:${{ inputs.image_tag }}
            ${{ env.DOCKERHUB_IMAGE }}:${{ inputs.image_tag }}
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache
          platforms: linux/amd64,linux/arm64/v8

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