publish-docker-image.yml

name: Publish Docker Image

on:
  push:
    branches: ['main']

env:
  REGISTRY: ghcr.io

jobs:
  build:
    permissions:
      contents: read
      packages: write

    runs-on: ubuntu-latest
    strategy:
      matrix:
        platform:
          - linux/amd64
          - linux/arm64/v8

    steps:
      - uses: actions/checkout@v4
      - name: Save BUILD_TAG
        run: |
          TIMESTAMP=`date +%Y%m%d%H%M%S`
          SHORT_SHA=$(echo "${GITHUB_SHA}" | cut -c1-6)
          SNAPSHOT_TAG="${TIMESTAMP}-${SHORT_SHA}"
          ARCH=$(echo '${{ matrix.platform }}' | tr / _)
          echo "BUILD_TAG=$SNAPSHOT_TAG-$ARCH" >> $GITHUB_ENV

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

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

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

      - name: Build and Push setup
        uses: docker/build-push-action@v6
        with:
          file: Dockerfile
          context: .
          platforms: ${{ matrix.platform }}
          tags: '${{ env.REGISTRY }}/agoric/causeaway:${{ env.BUILD_TAG }}'
          push: true
          build-args: |
            TAG=${{ env.BUILD_TAG }}