feat: update Docker config to run API and dashboard services

- Switch from Alpine to Debian slim for better package compatibility
- Add system dependencies for pdfplumber and psycopg2
- Configure separate services for API (port 8000) and dashboard (port 8501)
- Add automatic database initialization via init-db service
- Update documentation with simplified Docker setup
- Remove need for separate docker-compose.prod.yml

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -34,7 +34,25 @@ SPARC/
 
 ## Installation
 
-### NixOS (Recommended)
+### Docker (Recommended)
+
+```bash
+# Clone and configure
+git clone <repository-url>
+cd SPARC
+cp .env.example .env
+# Edit .env with your API keys
+
+# Start all services (API, Dashboard, PostgreSQL)
+docker-compose up -d
+
+# Access the services
+# - API: http://localhost:8000
+# - Dashboard: http://localhost:8501
+# - API Docs: http://localhost:8000/docs
+```
+
+### NixOS
 
 ```bash
 nix develop
@@ -262,4 +280,4 @@ For open source projects, say how it is licensed.
 
 Core functionality complete. Ready for production use with API keys configured.
 
-Next steps: API wrapper, containerization, and multi-company support.
+All major features implemented: REST API, Streamlit dashboard, Docker containerization, database storage, and multi-company batch processing.