Add FlashInfer to default Dockerfile (#6172)

Author: simon-mo

Dockerfile

@@ -167,6 +167,9 @@ RUN --mount=type=bind,from=build,src=/workspace/dist,target=/vllm-workspace/dist
 RUN --mount=type=bind,from=mamba-builder,src=/usr/src/mamba,target=/usr/src/mamba \
     --mount=type=cache,target=/root/.cache/pip \
     python3 -m pip install /usr/src/mamba/*.whl --no-cache-dir
+
+RUN --mount=type=cache,target=/root/.cache/pip \
+    python3 -m pip install https://github.com/flashinfer-ai/flashinfer/releases/download/v0.0.8/flashinfer-0.0.8+cu121torch2.3-cp310-cp310-linux_x86_64.whl
 #################### vLLM installation IMAGE ####################