name: Docker Test

on:
  workflow_dispatch:

jobs:
  docker-test:
    runs-on: ubuntu-latest

    steps:
      - name: Check Docker
        run: |
          docker version
          docker info

      - name: Test Docker Build
        run: |
          mkdir test-image
          cd test-image

          cat > Dockerfile <<'EOF'
          FROM alpine:latest
          CMD ["echo", "Docker runner works!"]
          EOF

          docker build -t test-runner:latest .
          docker run --rm test-runner:latest