[CPU] enable CI for PRs, add Dockerfile and auto build task (#6458)

Co-authored-by: diwei sun <diwei.sun@intel.com>
Co-authored-by: Yineng Zhang <me@zhyncs.com>

docker/Dockerfile.xeon

@@ -0,0 +1,44 @@
+FROM ubuntu:24.04
+SHELL ["/bin/bash", "-c"]
+
+ARG VER_SGLANG=main
+ARG VER_TORCH=2.6.0
+ARG VER_TORCHVISION=0.21.0
+
+RUN apt-get update && \
+    apt-get full-upgrade -y && \
+    DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y \
+    ca-certificates \
+    git \
+    curl \
+    wget \
+    vim \
+    gcc \
+    g++ \
+    make
+
+WORKDIR /sgl-workspace
+
+RUN curl -fsSL -v -o miniforge.sh -O https://github.com/conda-forge/miniforge/releases/download/24.11.3-2/Miniforge3-24.11.3-2-Linux-x86_64.sh && \
+    bash miniforge.sh -b -p ./miniforge3 && \
+    rm -f miniforge.sh && \
+    . miniforge3/bin/activate && \
+    conda install -y libsqlite==3.48.0 gperftools tbb libnuma numactl
+
+ENV PATH=/sgl-workspace/miniforge3/bin:/sgl-workspace/miniforge3/condabin:${PATH}
+ENV PIP_ROOT_USER_ACTION=ignore
+
+RUN pip install intel-openmp
+
+RUN git clone https://github.com/sgl-project/sglang.git && \
+    cd sglang && \
+    git checkout ${VER_SGLANG} && \
+    pip install -e "python[all_cpu]" && \
+    pip install torch==${VER_TORCH} torchvision==${VER_TORCHVISION} --index-url https://download.pytorch.org/whl/cpu --force-reinstall && \
+    cd sgl-kernel && \
+    cp pyproject_cpu.toml pyproject.toml && \
+    pip install -v .
+
+ENV LD_PRELOAD=/sgl-workspace/miniforge3/lib/libiomp5.so:/sgl-workspace/miniforge3/lib/libtcmalloc.so:/sgl-workspace/miniforge3/lib/libtbbmalloc.so.2
+
+WORKDIR /sgl-workspace/sglang