Investigation: Port sandboxed Docker + MCP + skills to other repositories

Ticket #158 was cancelled and its scope is incorporated into this broader investigation, which covers porting the entire sandboxed Docker + MCP + skills + REST system to other repositories.

## Code Review ### Ticket Type Investigation task - deliverable is a documentation file, not code changes. ### Test Results N/A - No code changes. This is a documentation-only PR. ### Files Changed - `docs/docker-mcp-portability-analysis.md` (538 lines) - New investigation document ### Investigation Requirements vs. Deliverables **Required Analysis (from ticket):** | Requirement | Status | Notes | |-------------|--------|-------| | Analyze current Docker setup | ✅ Complete | Dockerfile, MCP bridge, skills system all analyzed | | Identify specific vs. generic components | ✅ Complete | Clear breakdown in "What's Specific vs. Generic" section | | Explore portability approaches | ✅ Complete | 4 options documented with pros/cons | | At least 2-3 approaches | ✅ Complete | 4 approaches provided | | Recommendation provided | ✅ Complete | Hybrid approach (Option 4) recommended | | Proof of concept | ✅ Complete | Dockerfile snippets and bootstrap script included | ### Document Quality Assessment **Strengths:** - Comprehensive analysis of current architecture - Clear visual diagrams showing component relationships - 4 distinct approaches with tradeoffs (pros/cons/effort) - Concrete proof of concept code snippets - Configuration requirements clearly documented - Migration checklist provided **Content Coverage:** - Current system architecture: Thorough coverage of Docker, MCP bridge, skills, agent config - Component breakdown: Well-documented separation of specific vs. generic - Portability options: All options include effort level and tradeoffs - Recommendation: Hybrid approach justified with reasoning - Proof of concept: Usable Dockerfile snippets and bootstrap script ### Findings - Code quality: N/A (documentation only) - Security: N/A (no code changes) - Implementation: Meets all investigation goals from ticket description - Breaking changes: None (documentation addition) ### Decision **PASS** - Investigation deliverable complete and thorough. The document provides: 1. Clear understanding of what needs to be portable 2. 4 viable approaches with tradeoffs documented 3. A recommended path forward (Hybrid/Option 4) 4. Sufficient detail for implementation teams to proceed The investigation successfully addresses all requirements in the ticket.