update README

README.md

@@ -18,6 +18,8 @@ Tested in Ubuntu 16.04 LTS (64bit) with the following GPU's:
    Currently this image supports these versions of the NVIDIA driver: 304, 340, 361.
    It will fallback to the Generic OpenGL driver in case of failure.
 
+- Do not forget to pass host device `/dev/nvidia-modeset` to a container when running with NVIDIA driver >= 361.
+
 
 # Building and launching Steam
 

docker-compose.yml

@@ -19,7 +19,8 @@ services:
       - /dev/nvidia0
       - /dev/nvidiactl
       - /dev/nvidia-uvm
-      # - /dev/nvidia-modeset
+      # uncomment this when running NVIDIA Driver >= 361
+      - /dev/nvidia-modeset
       - /dev/dri
       # - /dev/snd
     environment: