docker-push-ghcr.yml

name: Build and Push Docker Image to GHCR

on:
  workflow_dispatch:
    inputs:
      release_tag:
        description: 'Release tag for the image (e.g. 0.10.87)'
        required: true
        type: string

permissions:
  contents: read
  packages: write

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        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 GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Lowercase repository name
        id: repo
        run: echo "name=${GITHUB_REPOSITORY,,}" >> "$GITHUB_OUTPUT"

      - name: Build and push multi-arch image
        uses: docker/build-push-action@v6
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: true
          tags: |
            ghcr.io/${{ steps.repo.outputs.name }}:${{ inputs.release_tag }}
            ghcr.io/${{ steps.repo.outputs.name }}:latest
          cache-from: type=gha
          cache-to: type=gha,mode=max