- Add etcd-client dependency for distributed configuration storage
- Implement EtcdConfig with priority: etcd > environment variables > defaults
- Add ServiceRegistry for service registration with lease keep-alive
- Integrate etcd-based service discovery for appks gRPC connections
- Add service watcher for real-time service instance updates
- Migrate Redis configuration from single URL to cluster node list
- Update Dockerfile with default IMKS_HOST and IMKS_PORT environment variables
- Add etcd bootstrap configuration through environment variables
- Implement Redis cluster URL building with optional authentication
- Create multi-stage Dockerfile with cargo-chef optimization
- Add .dockerignore to exclude unnecessary files from build context
- Include protobuf compiler and development dependencies in builder stage
- Set up proper user permissions and health check
- Configure release build with strip for smaller image size
- Add curl dependency for health check functionality
zhenyi