build-container.yml

name: Build Meshtastic build container
on:
    push:
      # build and push anytime commits are pushed/merged
      branches:
        - main
    release:
      # build and push upon release creation
      types:
        - created

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build_and_push_latest:
    runs-on: ubuntu-24.04
    name: Build and push upon merge
    permissions:
      contents: read
      packages: write
      id-token: write
      attestations: write

    steps:
      - uses: actions/checkout@v4

      - uses: docker/setup-qemu-action@v3

      - uses: docker/setup-buildx-action@v3

      - name: Docker Login GHCR
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

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

      - name: Build and push Docker image
        id: push
        uses: docker/build-push-action@v6
        with:
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max