[Feature] add Dockerfile dev image and doc

[zhyncs]

Checklist

• 1. If the issue you raised is not a feature but a question, please raise a discussion at https://github.com/sgl-project/sglang/discussions/new/choose Otherwise, it will be closed.
• 2. Please use English, otherwise it will be closed.

Motivation

Recently, the community has seen an influx of new developers. However, many are unfamiliar with using Docker for development and set up environments directly on their host machines, risking damage to the environment and affecting other developers. To efficiently utilize the cloud hosting resources sponsored by Nvidia H100, I will create a daily updated dev image and provide basic documentation to help new developers get started.

Related resources

No response

[zhyncs]

ref
https://github.com/sgl-project/sglang/blob/main/docker/Dockerfile.dev
https://github.com/sgl-project/sglang/blob/main/.github/workflows/release-docker.yml

[zhyncs]

Closing for now, I will update later when I have bandwidth.

naive version

# pull
docker pull lmsysorg/sglang:dev

# run
# use -v for dir mapping
docker run -itd --shm-size 32g --gpus all lmsysorg/sglang:dev /bin/zsh

# exec
docker exec -it $(docker ps | grep sglang:dev | awk '{print $1}') /bin/zsh