Overview of how the ray images are built:

Images without a "-cpu" or "-gpu" tag are built on ubuntu:22.04. They are just an alias for -cpu (e.g. ray:latest is the same as ray:latest-cpu).

ubuntu:22.04
└── base-deps:cpu
    └── ray:cpu

nvidia/cuda
└── base-deps:cudaXXX
    └── ray:cudaXXX
        └── ray-llm:cudaXXX