Add thin bnxt layer Dockerfile for existing SGLang images

add-bnxt.Dockerfile adds Broadcom bnxt_rocelib + transformers patch
on top of any SGLang ROCm base image. Faster than full rebuild when
the base image already has the right SGLang version.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: JordanNanos

docker/add-bnxt.Dockerfile

@@ -0,0 +1,48 @@
+# Thin layer that adds Broadcom bnxt_rocelib RDMA support to any SGLang ROCm image.
+# Usage:
+#   docker build --build-arg BASE_IMAGE=lmsysorg/sglang:v0.5.9-rocm700-mi30x \
+#     -t semianalysiswork/sgl-bnxt-cdna3:v0.5.9-bnxt-lite \
+#     -f add-bnxt.Dockerfile .
+
+ARG BASE_IMAGE
+FROM ${BASE_IMAGE}
+
+# Install RDMA build dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libibumad-dev rdma-core ibverbs-utils infiniband-diags \
+    gcc make libtool autoconf librdmacm-dev rdmacm-utils \
+    perftest ethtool libibverbs-dev strace \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Broadcom bnxt_rocelib
+ARG BCM_DRIVER=bcm5760x_231.2.63.0a.zip
+COPY ${BCM_DRIVER} /tmp/${BCM_DRIVER}
+RUN cd /tmp && \
+    case "${BCM_DRIVER}" in \
+      *.zip) apt-get update && apt-get install -y unzip && unzip -o ./${BCM_DRIVER} ;; \
+      *.tar.gz) tar zxf ./${BCM_DRIVER} ;; \
+      *) echo "ERROR: unsupported archive: ${BCM_DRIVER}" && exit 1 ;; \
+    esac && \
+    DIR_NAME="${BCM_DRIVER%.*}" && \
+    # Handle double extension (.tar.gz)
+    case "${BCM_DRIVER}" in *.tar.gz) DIR_NAME="${BCM_DRIVER%.tar.gz}" ;; esac && \
+    cd /tmp/${DIR_NAME}/drivers_linux/bnxt_rocelib && \
+    BCM_LIB=$(ls -1 *.tar.gz) && \
+    tar zxf ${BCM_LIB} && \
+    cd "${BCM_LIB%.tar.gz}" && \
+    sh ./autogen.sh && \
+    sh ./configure && \
+    make -j8 && \
+    # Backup inbox drivers and install
+    find /usr/lib64/ /usr/lib -name "libbnxt_re-rdmav*.so" -exec mv {} {}.inbox \; 2>/dev/null || true && \
+    make install && \
+    echo /usr/local/lib >> /etc/ld.so.conf && \
+    ldconfig && \
+    # Cleanup
+    rm -rf /tmp/${BCM_DRIVER} /tmp/${DIR_NAME} && \
+    echo "bnxt_rocelib installed successfully"
+
+# Upgrade transformers for glm_moe_dsa and qwen3_5_moe model type support
+RUN pip install --no-cache-dir -U \
+    "git+https://github.com/huggingface/transformers.git@6ed9ee36f608fd145168377345bfc4a5de12e1e2" \
+    && python3 -c "import transformers; print(f'transformers {transformers.__version__}')"