Fix container execution and add debug tooling
Container fixes:
- Run as non-root 'node' user (required for --dangerously-skip-permissions)
- Add allowDangerouslySkipPermissions: true to SDK options
- Mount .env file to work around Apple Container -i env var bug
- Use --mount for readonly, -v for read-write (Apple Container quirk)
- Bump SDK to 0.2.29, zod to v4
- Install Claude Code CLI globally in container
Logging improvements:
- Write per-run logs to groups/{folder}/logs/container-*.log
- Add debug-level logging for mounts and container args
Documentation:
- Add /debug skill with comprehensive troubleshooting guide
- Update /setup skill with API key configuration step
- Update SPEC.md with container details, mount syntax, security notes
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Gavriel
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.claude/skills/debug/SKILL.md
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.claude/skills/debug/SKILL.md
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---
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name: debug
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description: Debug container agent issues. Use when things aren't working, container fails, authentication problems, or to understand how the container system works. Covers logs, environment variables, mounts, and common issues.
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---
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# NanoClaw Container Debugging
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This guide covers debugging the containerized agent execution system.
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## Architecture Overview
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```
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Host (macOS) Container (Linux VM)
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─────────────────────────────────────────────────────────────
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src/container-runner.ts container/agent-runner/
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│ │
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│ spawns Apple Container │ runs Claude Agent SDK
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│ with volume mounts │ with MCP servers
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│ │
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├── data/env/env ──────────────> /workspace/env-dir/env
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├── groups/{folder} ───────────> /workspace/group
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├── data/ipc ──────────────────> /workspace/ipc
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└── (main only) project root ──> /workspace/project
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```
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## Log Locations
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| Log | Location | Content |
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|-----|----------|---------|
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| **Main app logs** | `logs/nanoclaw.log` | Host-side WhatsApp, routing, container spawning |
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| **Main app errors** | `logs/nanoclaw.error.log` | Host-side errors |
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| **Container run logs** | `groups/{folder}/logs/container-*.log` | Per-run: input, mounts, stderr, stdout |
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| **Claude sessions** | `~/.claude/projects/` | Claude Code session history |
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## Enabling Debug Logging
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Set `LOG_LEVEL=debug` for verbose output:
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```bash
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# For development
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LOG_LEVEL=debug npm run dev
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# For launchd service, add to plist EnvironmentVariables:
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<key>LOG_LEVEL</key>
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<string>debug</string>
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```
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Debug level shows:
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- Full mount configurations
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- Container command arguments
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- Real-time container stderr
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## Common Issues
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### 1. "Claude Code process exited with code 1"
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**Check the container log file** in `groups/{folder}/logs/container-*.log`
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Common causes:
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#### Missing API Key
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```
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Invalid API key · Please run /login
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```
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**Fix:** Ensure `.env` file exists in project root with valid `ANTHROPIC_API_KEY`:
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```bash
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cat .env # Should show: ANTHROPIC_API_KEY=sk-ant-...
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```
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#### Root User Restriction
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```
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--dangerously-skip-permissions cannot be used with root/sudo privileges
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```
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**Fix:** Container must run as non-root user. Check Dockerfile has `USER node`.
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### 2. Environment Variables Not Passing
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**Apple Container Bug:** Environment variables passed via `-e` are lost when using `-i` (interactive/piped stdin).
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**Workaround:** The system mounts `.env` as a file and sources it inside the container.
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To verify env vars are reaching the container:
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```bash
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echo '{}' | container run -i \
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--mount type=bind,source=$(pwd)/data/env,target=/workspace/env-dir,readonly \
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--entrypoint /bin/bash nanoclaw-agent:latest \
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-c 'export $(cat /workspace/env-dir/env | xargs); echo "API key length: ${#ANTHROPIC_API_KEY}"'
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```
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### 3. Mount Issues
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**Apple Container quirks:**
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- Only mounts directories, not individual files
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- `-v` syntax does NOT support `:ro` suffix - use `--mount` for readonly:
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```bash
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# Readonly: use --mount
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--mount "type=bind,source=/path,target=/container/path,readonly"
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# Read-write: use -v
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-v /path:/container/path
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```
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To check what's mounted inside a container:
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```bash
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container run --rm --entrypoint /bin/bash nanoclaw-agent:latest -c 'ls -la /workspace/'
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```
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Expected structure:
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```
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/workspace/
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├── env-dir/env # Environment file (ANTHROPIC_API_KEY)
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├── group/ # Current group folder (cwd)
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├── project/ # Project root (main channel only)
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├── global/ # Global CLAUDE.md (non-main only)
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├── ipc/ # Inter-process communication
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│ ├── messages/ # Outgoing WhatsApp messages
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│ └── tasks/ # Scheduled task commands
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└── extra/ # Additional custom mounts
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```
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### 4. Permission Issues
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The container runs as user `node` (uid 1000). Check ownership:
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```bash
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container run --rm --entrypoint /bin/bash nanoclaw-agent:latest -c '
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whoami
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ls -la /workspace/
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ls -la /app/
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'
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```
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All of `/workspace/` and `/app/` should be owned by `node`.
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### 5. MCP Server Failures
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If an MCP server fails to start, the agent may exit. Test MCP servers individually:
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```bash
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# Test Gmail MCP
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container run --rm --entrypoint /bin/bash nanoclaw-agent:latest -c '
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npx -y @gongrzhe/server-gmail-autoauth-mcp --help
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'
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```
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## Manual Container Testing
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### Test the full agent flow:
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```bash
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# Set up env file
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mkdir -p data/env groups/test
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cp .env data/env/env
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# Run test query
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echo '{"prompt":"What is 2+2?","groupFolder":"test","chatJid":"test@g.us","isMain":false}' | \
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container run -i \
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--mount "type=bind,source=$(pwd)/data/env,target=/workspace/env-dir,readonly" \
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-v $(pwd)/groups/test:/workspace/group \
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-v $(pwd)/data/ipc:/workspace/ipc \
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nanoclaw-agent:latest
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```
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### Test Claude Code directly:
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```bash
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container run --rm --entrypoint /bin/bash \
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--mount "type=bind,source=$(pwd)/data/env,target=/workspace/env-dir,readonly" \
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nanoclaw-agent:latest -c '
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export $(cat /workspace/env-dir/env | xargs)
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claude -p "Say hello" --dangerously-skip-permissions --allowedTools ""
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'
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```
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### Interactive shell in container:
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```bash
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container run --rm -it --entrypoint /bin/bash nanoclaw-agent:latest
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```
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## SDK Options Reference
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The agent-runner uses these Claude Agent SDK options:
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```typescript
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query({
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prompt: input.prompt,
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options: {
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cwd: '/workspace/group',
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allowedTools: ['Bash', 'Read', 'Write', ...],
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permissionMode: 'bypassPermissions',
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allowDangerouslySkipPermissions: true, // Required with bypassPermissions
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settingSources: ['project'],
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mcpServers: { ... }
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}
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})
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```
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**Important:** `allowDangerouslySkipPermissions: true` is required when using `permissionMode: 'bypassPermissions'`. Without it, Claude Code exits with code 1.
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## Rebuilding After Changes
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```bash
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# Rebuild main app
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npm run build
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# Rebuild container (use --no-cache for clean rebuild)
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./container/build.sh
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# Or force full rebuild
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container builder prune -af
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./container/build.sh
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```
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## Checking Container Image
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```bash
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# List images
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container images
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# Check what's in the image
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container run --rm --entrypoint /bin/bash nanoclaw-agent:latest -c '
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echo "=== Node version ==="
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node --version
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echo "=== Claude Code version ==="
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claude --version
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echo "=== Installed packages ==="
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ls /app/node_modules/
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'
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```
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## Session Persistence
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Claude sessions are stored in `~/.claude/` which is mounted into the container. To clear sessions:
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```bash
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# Clear all sessions
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rm -rf ~/.claude/projects/
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# Clear sessions for a specific group
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rm -rf ~/.claude/projects/*workspace-group*/
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```
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## IPC Debugging
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The container communicates back to the host via files in `/workspace/ipc/`:
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```bash
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# Check pending messages
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ls -la data/ipc/messages/
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# Check pending task operations
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ls -la data/ipc/tasks/
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# Read a specific IPC file
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cat data/ipc/messages/*.json
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```
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## Quick Diagnostic Script
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Run this to check common issues:
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```bash
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echo "=== Checking NanoClaw Container Setup ==="
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echo -e "\n1. API Key configured?"
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[ -f .env ] && grep -q "ANTHROPIC_API_KEY=sk-" .env && echo "OK" || echo "MISSING - create .env with ANTHROPIC_API_KEY"
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echo -e "\n2. Env file copied for container?"
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[ -f data/env/env ] && echo "OK" || echo "MISSING - will be created on first run"
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echo -e "\n3. Container image exists?"
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container images 2>/dev/null | grep -q nanoclaw-agent && echo "OK" || echo "MISSING - run ./container/build.sh"
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echo -e "\n4. Apple Container running?"
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container system info &>/dev/null && echo "OK" || echo "NOT RUNNING - run: container system start"
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echo -e "\n5. Groups directory?"
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ls -la groups/ 2>/dev/null || echo "MISSING - run setup"
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echo -e "\n6. Recent container logs?"
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ls -t groups/*/logs/container-*.log 2>/dev/null | head -3 || echo "No container logs yet"
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```
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