Update readme to include docker-less instructions

[alexlwn123]

Describe the feature or problem you’d like to solve

From the readme, it's not obvious how this can be run without docker.

Proposed solution

The docker daemon has large memory requirements. Naturally, this is problematic for lower-end devices or for folks who need other heavy dev infrastructure running locally.

Thinking the readme should suggest an 1st class option to run without docker.

Additional context

Are the instructions on the old published npm package still valid? It includes run with npx instructions. here

[StefMa]

The old instructions seems to be not valid anymore. Those were published and maintained by anthropic. Github decided to use go instead of Javascript/typescript.

Anyways I opened a PR here to clarify how to use the project without docker.

I haven't tested it, maybe someone wants to try it out and report back how it works 🙃