name: Image Build Probe

on:
  workflow_dispatch:

env:
  REGISTRY: forgejo.coulomb.social
  IMAGE_NAME: coulomb/forgejo-actions-probe
  DOCKER_HOST: tcp://127.0.0.1:2375

jobs:
  image-build:
    runs-on: container-build
    steps:
      - name: Build and push image (no checkout)
        env:
          REGISTRY_USER: ${{ secrets.REGISTRY_USER }}
          REGISTRY_TOKEN: ${{ secrets.REGISTRY_TOKEN }}
        run: |
          set -eux
          mkdir -p "${HOME}/bin" buildctx
          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
          echo forgejo-image-build-probe-ok > buildctx/probe.txt
          printf 'FROM alpine:3.20\nCOPY probe.txt /\n' > buildctx/Dockerfile
          IMAGE="${REGISTRY}/${IMAGE_NAME}"
          docker build -t "${IMAGE}:dispatch-test" buildctx
          docker push "${IMAGE}:dispatch-test"
          echo "pushed ${IMAGE}:dispatch-test"