build-docker.yml

name: docker

on:
  push:

env:
  IMAGE_FQDN: ghcr.io/kontextwork/zimbra-builder
  # actually that's the distro to build ON and FOR
  TARGET_DISTO: ubuntu:20.04

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout us
        uses: actions/checkout@v4
        with:
          path: builder
      - name: Checkout zimbra-build-scripts
        uses: actions/checkout@v4
        with:
          repository: ianw1974/zimbra-build-scripts
          ref: main
          path: zimbra-build-scripts
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      - name: Login to GHCR
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ github.token }}
      - name: Build builder
        uses: docker/build-push-action@v3
        with:
          context: zimbra-build-scripts
          platforms: linux/amd64
          push: true
          build-args: |
            # actually that's the distro to build ON and FOR
            RELEASE=${{ env.TARGET_DISTRO }}
          tags: |
            ${{ env.IMAGE_FQDN }}:latest