Update index.md

docs/install/index.md

@@ -6,6 +6,11 @@ nav_order: 1
 redirect_from: /docs/how-to/install
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+# Install Dependencies before installing ONNX Runtime
+
+   pip install flatbuffers numpy packaging protobuf sympy
+   pip install --upgrade --pre onnxruntime --index-url https://aiinfra.pkgs.visualstudio.com/PublicPackages/_packaging/ORT-Nightly/pypi/simple/
+
 # Install ONNX Runtime
 
 See the [installation matrix](https://onnxruntime.ai) for recommended instructions for desired combinations of target
@@ -30,6 +35,9 @@ under [Compatibility](../reference/compatibility).
   require [Visual C++ 2019 runtime](https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads).
   The latest version is recommended.
 
+
+
+
 ### CUDA and CuDNN
 
 For ONNX Runtime GPU package, it is required to install [CUDA](https://developer.nvidia.com/cuda-toolkit) and [cuDNN](https://developer.nvidia.com/cudnn). Check [CUDA execution provider requirements](../execution-providers/CUDA-ExecutionProvider.md#requirements) for compatible version of CUDA and cuDNN.