Add docker file (#588)

Co-authored-by: Ying Sheng <ying.sheng@databricks.com>

README.md

@@ -49,6 +49,9 @@ pip install -e "python[all]"
 pip install flashinfer -i https://flashinfer.ai/whl/cu121/torch2.3/
 ```
 
+### Method 3: Using Docker
+The docker images are vailable on Docker Hub as [lmsysorg/sglang](https://hub.docker.com/r/lmsysorg/sglang/tags).
+
 ### Notes
 - If you see errors from the Triton compiler, please install the [Triton Nightly](https://triton-lang.org/main/getting-started/installation.html).
 - If you cannot install FlashInfer, check out its [installation](https://docs.flashinfer.ai/installation.html#) page. If you still cannot install it, you can use the slower Triton kernels by adding `--disable-flashinfer` when launching the server.

docker/Dockerfile

+FROM vllm/vllm-openai
+
+RUN pip install --upgrade pip
+RUN pip install "sglang[all]"
+RUN pip uninstall -y triton triton-nightly && pip install --no-deps --index-url https://aiinfra.pkgs.visualstudio.com/PublicPackages/_packaging/Triton-Nightly/pypi/simple/ triton-nightly
+RUN pip install flashinfer -i https://flashinfer.ai/whl/cu121/torch2.3/