docker-build.yml

name: Build and Push Docker Image to GHCR on Release

# Trigger the workflow when a new release is created
on:
  release:
    types: [published]

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      # Check out the repository containing the Dockerfile and other necessary files
      - name: Checkout repository
        uses: actions/checkout@v3

      # Set up Docker Buildx for advanced build features like multi-platform builds
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      # Log in to GitHub Container Registry (GHCR)
      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GHCR_TOKEN }}

      # Build and push the Docker image to GHCR with the 'latest' and release tags
      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: |
            ghcr.io/matthewlarner/inception-mqtt:latest
            ghcr.io/matthewlarner/inception-mqtt:${{ github.event.release.tag_name }}