The tutorial demonstrates how to install Docker with GPU support on Ubuntu Linux, specifically using the NVIDIA NGC container registry. To achieve this, you need to install Lambda Stack and Docker with nvidia-container-toolkit. The process involves pulling a pre-configured NVIDIA PyTorch container from NGC, mounting a local folder as part of the container's file system, and running an interactive session within the container. With these steps, users can leverage GPU acceleration for their PyTorch-based applications on Ubuntu Linux.