# Canonical single-repo image build template (tier 2).
# Copy to: .forgejo/workflows/image.yaml and set IMAGE_NAME.
# Requires org secrets: REGISTRY_USER, REGISTRY_TOKEN
# Runner label: container-build (DinD sidecar on railiance01-build-01)
name: Build and Publish Container Image

on:
  push:
    branches:
      - main
    paths:
      - ".forgejo/workflows/image.yaml"
      - "Dockerfile"
      - "src/**"
  workflow_dispatch:

env:
  REGISTRY: forgejo.coulomb.social
  # Set per repo, e.g. coulomb/key-cape
  IMAGE_NAME: coulomb/REPLACE_ME
  DOCKER_HOST: tcp://127.0.0.1:2375

jobs:
  build-and-push:
    runs-on: container-build
    steps:
      - name: Build and push image
        env:
          REGISTRY_USER: ${{ secrets.REGISTRY_USER }}
          REGISTRY_TOKEN: ${{ secrets.REGISTRY_TOKEN }}
        run: |
          set -eu
          REF="${GITHUB_SHA:-main}"
          mkdir -p buildctx "${HOME}/bin"
          wget -qO /tmp/repo.tar.gz \
            "https://forgejo.coulomb.social/${GITHUB_REPOSITORY}/archive/${REF}.tar.gz"
          tar xzf /tmp/repo.tar.gz -C buildctx --strip-components=1
          wget -qO- https://download.docker.com/linux/static/stable/x86_64/docker-27.3.1.tgz \
            | tar xz --strip-components=1 -C "${HOME}/bin" docker/docker
          export PATH="${HOME}/bin:${PATH}"
          docker version
          echo "${REGISTRY_TOKEN}" | docker login "${REGISTRY}" -u "${REGISTRY_USER}" --password-stdin
          SHORT="${REF:0:7}"
          IMAGE="${REGISTRY}/${IMAGE_NAME}"
          docker build -t "${IMAGE}:latest" -t "${IMAGE}:main-${SHORT}" buildctx
          docker push "${IMAGE}:latest"
          docker push "${IMAGE}:main-${SHORT}"
          echo "pushed ${IMAGE}:latest and ${IMAGE}:main-${SHORT}"