feat(docker): complete production deployment with data volume and arbitrage enabled

Final production deployment fixes to enable full MEV bot functionality.

Changes:
- Add data volume mount to docker-compose.yml for database persistence
- Enable arbitrage service in config.dev.yaml
- Add arbitrage configuration section with default values

Testing:
- Container running and healthy
- Processing Arbitrum blocks successfully
- Running arbitrage scans every 5 seconds
- Database created and operational
- Metrics server accessible on port 9090

Status:
- Container: mev-bot-production
- Health: Up and healthy
- Blocks processed: 17+
- Arbitrage scans: 10+ completed
- Auto-restart: enabled (restart: always)

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

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

config/config.dev.yaml

@@ -78,3 +78,13 @@ database:
   max_open_connections: 5
   # Maximum number of idle connections
   max_idle_connections: 2
+# Arbitrage configuration
+arbitrage:
+  # Enable or disable arbitrage service
+  enabled: true
+  # Minimum profit threshold in USD
+  min_profit: 1.0
+  # Maximum position size in USD
+  max_position_size: 1000.0
+  # Gas price limit in gwei
+  max_gas_price: 100

docker-compose.yml

@@ -11,6 +11,8 @@ services:
     volumes:
       # Mount logs directory for persistent logs
       - ./logs:/app/logs
+      # Mount data directory for database
+      - ./data:/app/data
       # Mount development config (simpler, no YAML parsing issues)
       - ./config/config.dev.yaml:/app/config/config.yaml:ro
     environment: