Minor fix docker container DeepEP on multi platforms (#9205)

docker/Dockerfile

@@ -102,7 +102,18 @@ RUN cd /sgl-workspace/nvshmem && \
 
 # Install DeepEP
 RUN cd /sgl-workspace/DeepEP && \
-    TORCH_CUDA_ARCH_LIST='9.0;10.0' NVSHMEM_DIR=${NVSHMEM_DIR} pip install .
+    case "$CUDA_VERSION" in \
+      12.6.1) \
+        CHOSEN_TORCH_CUDA_ARCH_LIST='9.0' \
+        ;; \
+      12.8.1|12.9.1) \
+        CHOSEN_TORCH_CUDA_ARCH_LIST='9.0;10.0' \
+        ;; \
+      *) \
+        echo "Unsupported CUDA version: $CUDA_VERSION" && exit 1 \
+        ;; \
+    esac && \
+    NVSHMEM_DIR=${NVSHMEM_DIR} TORCH_CUDA_ARCH_LIST="${CHOSEN_TORCH_CUDA_ARCH_LIST}" pip install .
 
 # Python tools
 RUN python3 -m pip install --no-cache-dir \