update with README.md

Author: Yuke Wang

README.md

@@ -39,7 +39,8 @@ git clone --recursive git@github.com:YukeWang96/OSDI21_AE.git
 There are two ways to setup the environment of GNNAdvisor and baselines.
 ### + **Method 1**:  Setup the environment via Docker (**Recommended**).
 + Install Docker Engine with NVIDIA GPU Support **[Toturial](https://docs.nvidia.com/datacenter/cloud-native/container-toolkit/install-guide.html#docker)**.
-+ `cd Docker` then run `./build.sh`, it may takes a while for installation.
++ `cd Docker` then either goto `cu102/` (for Quadro P6000 and Tesla V100) or `cu110/` (for RTX3090/RTX3070).
++ Run `./build.sh`, it may takes a while (around 10 minutes) for building the container.
 + Run `./launch.sh` then it will bring up an new interactive command line interface.
 > + The defualt GPU is device:0. If you want to run on different deivce. Consider using this command in `./launch.sh`, e.g., using device:1
 >