common/.github/workflows/shared-docker-build-push.yaml at main · cloudoperators/common · GitHub

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name: Shared Docker Build Push

on:
  workflow_call:
    inputs:
      runs-on:
        description: "The runner to use for the job (must be a Linux runner; this workflow requires Docker buildx)"
        required: false
        default: "ubuntu-latest"
        type: string
      working-directory:
        description: "Working directory used as Docker build context"
        required: false
        default: "."
        type: string
      image-name:
        description: "Full GHCR image name, e.g. ghcr.io/cloudoperators/myapp"
        required: true
        type: string
      platforms:
        description: "Comma-separated list of target platforms for the Docker image"
        required: false
        default: "linux/amd64,linux/arm64"
        type: string
    secrets:
      registry-token:
        description: "Token used to authenticate to the container registry when pushing"
        required: false

jobs:
  push:
    runs-on: ${{ inputs.runs-on }}
    permissions:
      contents: read
      packages: write
    defaults:
      run:
        working-directory: ${{ inputs.working-directory }}
    steps:
      - name: Validate inputs
        env:
          IMAGE_NAME: ${{ inputs.image-name }}
        run: |
          if [ "$RUNNER_OS" != "Linux" ]; then
            echo "ERROR: docker push requires a Linux runner; got: $RUNNER_OS"
            exit 1
          fi
          case "$IMAGE_NAME" in
            ghcr.io/*) ;;
            *) echo "ERROR: image-name must start with 'ghcr.io/' (got: '$IMAGE_NAME')"; exit 1 ;;
          esac

      - name: Checkout repository
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4

      - name: Set up QEMU
        uses: docker/setup-qemu-action@29109295f81e9208d7d86ff9c25c0e60b9eba63c # v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@b5730b4fe97e6f9f14b9d7bb5f0f0b9f75a3b6ca # v3

      - name: Log in to container registry
        uses: docker/login-action@74a5d142397b4f367a81961eba4e8cd7edddf772 # v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.registry-token != '' && secrets.registry-token || secrets.GITHUB_TOKEN }}

      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@902fa8ec7d6ecbea8a63d9c1064e4b9e02685b72 # v5
        with:
          images: ${{ inputs.image-name }}

      - name: Build and push Docker image
        uses: docker/build-push-action@14487ce63c7a62a4a324b0bfb37086795e31c6c1 # v6
        with:
          context: ${{ inputs.working-directory }}
          platforms: ${{ inputs.platforms }}
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}