docs: create handoff document for Pi deployment
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HANDOFF.md
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HANDOFF.md
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# Pirate Station - Development Handoff
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**Date:** 2026-02-03
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**Phase:** Phase 1 (Foundation) Complete
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**Next:** Phase 2 (CLI Tool)
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**Environment:** Moving from dev machine to Raspberry Pi
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---
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## Current Status
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### ✓ Phase 1: Foundation Complete
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All code and configurations are ready. Docker runtime verification deferred to Pi deployment due to corporate proxy blocking Docker Hub access on dev machine.
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**Commits:**
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- `2691ded` - Go project with HTTP server and health check
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- `38edbf6` - Multi-stage Dockerfile for cross-platform builds
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- `257edf5` - Plan 01-01 completion
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- `6cbf414` - Docker Compose dev environment
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- `c09f4d7` - Plan 01-02 completion
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- `c8cd06b` - Phase 1 completion metadata
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**Requirements Delivered:**
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- ✓ **INFRA-01**: Docker container isolation design (runtime verification deferred)
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- ✓ **INFRA-02**: Single binary Go backend (fully verified)
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---
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## What Was Built
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### Go HTTP Server
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- **Location:** `cmd/server/main.go`, `internal/health/handler.go`
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- **Port:** 32768 (high port to avoid Pi service conflicts)
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- **Endpoints:**
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- `/` - Returns "Pirate Station API"
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- `/health` - Returns healthy when `/data` mounted, unhealthy otherwise
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- **Binary Size:** 4.4MB (amd64), 4.2MB (arm64) - stripped static binary
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- **Dependencies:** Go stdlib only (no external packages)
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### Docker Configuration
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- **Dockerfile:** `docker/Dockerfile`
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- Multi-stage build (golang:1.25-bookworm → debian:bookworm-slim)
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- CGO_ENABLED=0 for static binary
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- Non-root user (appuser, UID 10001)
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- Volume mount at `/data`
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- Multi-arch support via buildx (amd64 + arm64)
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- **Compose:** `docker-compose.yml`
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- Dev environment with hot reload
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- Bind mount for live editing
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- Named volume for persistent data
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- **Hot Reload:** `.air.toml`
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- Watches Go files for changes
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- Rebuilds automatically to `tmp/server`
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---
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## Known Blockers
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### Docker Hub Registry Access
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**Impact:** Cannot build/test Docker images on dev machine
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**Cause:** Corporate proxy blocks registry-1.docker.io
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**Status:** Deferred to Pi deployment
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**Resolution Options:**
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1. **Build on Pi** (Recommended) - Pi network config may allow registry access
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2. **Configure proxy** - Set `HTTP_PROXY`/`HTTPS_PROXY` in Docker daemon
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3. **Use mirror registry** - Modify Dockerfile to use gcr.io or quay.io
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4. **Manual base images** - Pre-pull images on different network
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---
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## First Run on Raspberry Pi
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### Prerequisites
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- Git configured on Pi
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- Docker installed
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- Go 1.22+ installed (for local builds)
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- Gitea set up (for future image pushes)
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### Steps
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1. **Clone repository on Pi:**
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```bash
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git clone <gitea-url>/acty/pirate-station.git
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cd pirate-station
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```
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2. **Verify Go build works:**
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```bash
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go build -o tmp/server ./cmd/server
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./tmp/server
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# In another terminal:
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curl http://localhost:32768/
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curl http://localhost:32768/health
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```
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3. **Build Docker image:**
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```bash
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docker build -f docker/Dockerfile -t pirate-station:latest .
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```
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If build succeeds, check image size:
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```bash
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docker images pirate-station:latest --format "{{.Size}}"
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# Should be under 150MB
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```
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4. **Test container isolation:**
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```bash
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# Create test data volume
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docker volume create pirate-data
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# Run container
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docker run -d --name pirate-test -p 32768:32768 -v pirate-data:/data pirate-station:latest
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# Test endpoints
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curl http://localhost:32768/
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curl http://localhost:32768/health
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# Verify health returns "healthy" (volume is mounted)
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# Cleanup
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docker stop pirate-test
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docker rm pirate-test
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```
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5. **Test dev environment:**
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```bash
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docker compose up --build
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# Server should start on port 32768
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# Edit cmd/server/main.go and watch for auto-rebuild
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```
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6. **Multi-arch build (optional):**
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```bash
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docker buildx create --name pirate-builder --use
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docker buildx build --platform linux/amd64,linux/arm64 \
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-f docker/Dockerfile \
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-t gitea.local/acty/pirate-station:latest \
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--push .
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```
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---
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## File Structure
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```
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pirate-station/
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├── cmd/
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│ └── server/
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│ └── main.go # HTTP server entry point
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├── internal/
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│ └── health/
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│ └── handler.go # Health check endpoint
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├── docker/
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│ └── Dockerfile # Multi-stage container build
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├── .planning/ # GSD planning artifacts
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│ ├── PROJECT.md # Project definition
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│ ├── ROADMAP.md # 6-phase roadmap
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│ ├── REQUIREMENTS.md # 21 v1 requirements
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│ ├── STATE.md # Current progress
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│ └── phases/
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│ └── 01-foundation/
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│ ├── 01-CONTEXT.md # Phase 1 decisions
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│ ├── 01-RESEARCH.md # Go/Docker research
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│ ├── 01-01-PLAN.md # Plan 1: Go + Dockerfile
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│ ├── 01-01-SUMMARY.md # Plan 1 completion report
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│ ├── 01-02-PLAN.md # Plan 2: Compose + verification
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│ ├── 01-02-SUMMARY.md # Plan 2 completion report
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│ └── 01-VERIFICATION.md # Phase verification report
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├── docker-compose.yml # Dev environment
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├── .air.toml # Hot reload config
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├── .dockerignore # Build context exclusions
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├── go.mod # Go module definition
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└── go.sum # Dependency checksums
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```
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---
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## Next Steps: Phase 2 - CLI Tool
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**Goal:** Admin can manage user accounts via CLI
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**Requirements:**
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- CLI-01: Create user account
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- CLI-02: Delete user account
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- CLI-03: Change user password
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- CLI-04: List all users
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**Before planning Phase 2:**
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Run `/gsd:discuss-phase 2` to gather context and make decisions about:
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- User storage format (SQLite, JSON, etc.)
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- Password hashing algorithm (bcrypt vs argon2)
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- CLI tool structure (subcommands vs flags)
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- Where user database lives (in /data volume)
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**Or skip directly to planning:**
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Run `/gsd:plan-phase 2` if you want to proceed without discussion.
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---
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## Key Decisions Made
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| Decision | Rationale |
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|----------|-----------|
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| Go stdlib only | Minimize binary size, maintain simplicity |
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| Port 32768 | High port avoids Pi service conflicts |
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| Debian slim base | Better debugging vs Alpine, acceptable size |
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| Health check verifies /data | Enables orchestration readiness probes |
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| Static binary (CGO_ENABLED=0) | True portability across platforms |
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| Non-root container user | Security best practice |
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| Multi-stage Dockerfile | 95% smaller image vs single-stage |
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| Docker Compose for dev | Bind mount + hot reload for fast iteration |
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---
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## Commands Reference
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### Development
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```bash
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# Local Go build and run
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go build -o tmp/server ./cmd/server
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./tmp/server
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# Dev environment with hot reload
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docker compose up --build
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# Test endpoints
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curl http://localhost:32768/
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curl http://localhost:32768/health
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```
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### Docker Production
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```bash
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# Build image
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docker build -f docker/Dockerfile -t pirate-station:latest .
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# Run container
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docker run -d -p 32768:32768 -v pirate-data:/data pirate-station:latest
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# Multi-arch build
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docker buildx build --platform linux/amd64,linux/arm64 \
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-f docker/Dockerfile -t pirate-station:multiarch .
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```
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### GSD Commands
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```bash
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# Resume project
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/gsd:resume-work
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# Check progress
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/gsd:progress
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# Plan next phase
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/gsd:discuss-phase 2 # Gather context first
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/gsd:plan-phase 2 # Create execution plan
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# Execute phase
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/gsd:execute-phase 2 # Run all plans in phase
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```
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---
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## Verification Checklist for Pi
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When you first run on Pi, verify these items to confirm Phase 1 is fully complete:
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- [ ] Go binary compiles on Pi
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- [ ] Server starts and responds on port 32768
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- [ ] Health endpoint returns correct status
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- [ ] Docker image builds successfully (no registry errors)
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- [ ] Image size is under 150MB
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- [ ] Container runs as non-root user (appuser)
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- [ ] Container can only access /data volume
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- [ ] Host filesystem is isolated (cannot read /tmp/host-secret.txt from container)
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- [ ] Docker Compose dev environment starts
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- [ ] Hot reload detects Go file changes and rebuilds
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Once all items pass, Phase 1 verification is complete and Phase 2 can begin.
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---
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## Support
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- **Planning docs:** `.planning/` directory
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- **Verification report:** `.planning/phases/01-foundation/01-VERIFICATION.md`
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- **Phase summaries:** `.planning/phases/01-foundation/*-SUMMARY.md`
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- **GSD help:** `/gsd:help`
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---
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*Last updated: 2026-02-03*
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*Next session: Raspberry Pi deployment + Phase 2 planning*
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Reference in New Issue
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