fix dockerfile

docker/sglang.dockerfile

@@ -1,59 +1,26 @@
-FROM lmsysorg/sglang:latest
+ARG BASE_IMAGE
+FROM ${BASE_IMAGE}
 
 LABEL maintainer="MSCCL++"
-LABEL org.opencontainers.image.source=https://github.com/sgl-project/sglang
-
-ENV DEBIAN_FRONTEND=noninteractive
-USER root
-
-RUN rm -rf /opt/nvidia
+LABEL org.opencontainers.image.source=https://github.com/microsoft/mscclpp
 
+# Install cmake (not in base image)
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
-        build-essential \
-        ca-certificates \
-        curl \
-        git \
-        libcap2 \
-        libnuma-dev \
-        lsb-release \
-        openssh-client \
-        openssh-server \
-        python3-dev \
-        python3-pip \
-        python3-setuptools \
-        python3-wheel \
-        python3-venv \
         cmake \
-        sudo \
-        wget
-
-# Install OFED
-ARG OFED_VERSION=24.10-3.2.5.0
-RUN cd /tmp && \
-    OS_ARCH=$(uname -m) && \
-    OS_VERSION=$(lsb_release -rs) && \
-    OS_VERSION=ubuntu${OS_VERSION} && \
-    wget -q https://content.mellanox.com/ofed/MLNX_OFED-${OFED_VERSION}/MLNX_OFED_LINUX-${OFED_VERSION}-${OS_VERSION}-${OS_ARCH}.tgz && \
-    tar xzf MLNX_OFED_LINUX-${OFED_VERSION}-${OS_VERSION}-${OS_ARCH}.tgz && \
-    MLNX_OFED_LINUX-${OFED_VERSION}-${OS_VERSION}-${OS_ARCH}/mlnxofedinstall --user-space-only --without-fw-update --without-ucx-cuda --force --all && \
-    rm -rf /tmp/MLNX_OFED_LINUX-${OFED_VERSION}*
-
-# Install OpenMPI (should be done after the OFED installation) & clean apt cache
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends \
-        libopenmpi-dev \
         && \
     apt-get autoremove -y && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* /tmp/*
 
-# OpenMPI short link (for compatibility with old images)
-RUN ln -s /usr/lib/x86_64-linux-gnu/openmpi /usr/local/mpi
+# Create Python venv
+RUN python3 -m venv /root/venv && \
+    echo 'source /root/venv/bin/activate' >> /root/.bashrc
+ENV PATH="/root/venv/bin:${PATH}"
 
-ARG EXTRA_LD_PATH=
-ENV LD_LIBRARY_PATH="${EXTRA_LD_PATH}:${LD_LIBRARY_PATH}"
-RUN echo LD_LIBRARY_PATH="${LD_LIBRARY_PATH}" >> /etc/environment
+# Install SGLang
+RUN pip install --upgrade pip && \
+    pip install uv && \
+    uv pip install sglang
 
-ENTRYPOINT []
 WORKDIR /