Docker

Build, hardware-integration and image-preparation notes for Linux containers.

1. Multi-architecture images: AMD64 and ARM64 builds with Buildx.
2. A static application with scratch: static C++ compilation and an empty runtime base.
3. Running GUI applications: X11, Wayland, display sockets, GPU acceleration and authentication.
4. Building and testing C++: multi-stage builds, CMake, CTest and dependency caching.
5. Why USB access fails: device mapping, kernel modules and host limitations.