diff --git a/build_nvfp4.sh b/build_nvfp4.sh
new file mode 100644
index 0000000..50fb4ec
--- /dev/null
+++ b/build_nvfp4.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+# Build DeepGEMM NVFP4 mega_moe kernel inside the running vLLM container
+# Usage: bash build_nvfp4.sh [CACHE_BUSTER_VALUE]
+
+set -e
+CACHE_BUSTER=${1:-1}
+
+CONTAINER=nvidia-meeting-vllm-1
+REPO_DIR=/root/DeepGEMM-nvfp4
+
+echo "=== Cleaning old clone (CACHE_BUSTER=$CACHE_BUSTER) ==="
+docker exec $CONTAINER bash -c "rm -rf $REPO_DIR"
+
+echo "=== Cloning nvfp4-mega-moe branch ==="
+docker exec $CONTAINER bash -c "git clone -b nvfp4-mega-moe https://sweetapi.com/biondizzle/DeepGEMM.git $REPO_DIR && CACHE_BUSTER=$CACHE_BUSTER"
+
+echo "=== Building DeepGEMM ==="
+docker exec $CONTAINER bash -c "export CPATH='/usr/local/lib/python3.12/dist-packages/flashinfer/data/cutlass/include:/usr/local/lib/python3.12/dist-packages/nvidia/cu13/include:\$CPATH' && cd $REPO_DIR && python3 setup.py build_ext --inplace 2>&1"
+
+echo "=== Verifying ==="
+docker exec $CONTAINER bash -c "cd $REPO_DIR && python3 -c 'import deep_gemm; print(\"DeepGEMM NVFP4 build OK\")' 2>&1"
+
+echo "=== DONE ==="