add from_hub method to base EnvClient

[burtenshaw]

This PR integrates with the hub's built in docker registry via a from_hub method, so you can do:

    env = TextArenaEnv.from_hub(
        "burtenshaw/textarena",
        env_vars={
            "TEXTARENA_ENV_ID": "GuessTheNumber-v0",
            "TEXTARENA_NUM_PLAYERS": "1",
        },
        ports={8000: 8000},
    )

[zkwentz]

Awesome.

The only wrinkle we'll have with this, is while we are in a quasi state with Hugging Face docker spaces, the environments pulled will be custom built to have a web interface in a docker space. There may be performance reasons someone would not want that, there might also be specifics on an environment that get overridden because we take over the build on openenv push.

[burtenshaw]

The only wrinkle we'll have with this, is while we are in a quasi state with Hugging Face docker spaces, the environments pulled will be custom built to have a web interface in a docker space. There may be performance reasons someone would not want that, there might also be specifics on an environment that get overridden because we take over the build on openenv push.

Great point. Tbh, I think we could improve the interface component with a feature that accepted a flag like WEB_INTERFACE=0 to block. I've also noticed a lot of community chatter about customising interfaces. I will open an issues on this, and try to encourage some chatter.