Workaround for "Incompatible Vulkan driver found" (ICD)

Bug report

• AirSim Version/#commit: 4266b898ac5b20f35ebca3f2e3fa821b336dec69 (Dec 7)
• UE/Unity version: tested with 4.25.4 and after
• autopilot version: N/A
• OS Version: docker build on Ubuntu 20.04

What's the issue you encountered?

Following the instructions from https://microsoft.github.io/AirSim/docker_ubuntu/ and using a more recent version of UE (4.25).

When running ./run_airsim_image_source.sh airsim_source:4.27.2-cudagl10.2 and then trying /home/ue4/UnrealEngine/Engine/Binaries/Linux/UE4Editor I am prompted with an Incompatible Vulkan driver found error with sub-message Cannot find a compatible Vulkan driver (ICD)

Settings

N/A

How can the issue be reproduced?

1. build following https://microsoft.github.io/AirSim/docker_ubuntu/ instructions
2. try to start UE4Editor to test

Include full error message in text form

Incompatible Vulkan driver found error sub-message Cannot find a compatible Vulkan driver (ICD)

What's better than filing an issue? Filing a pull request :).

This can be bypassed by mounting the ICD directory within the running container:

git diff ./run_airsim_image_source.sh
diff --git a/docker/run_airsim_image_source.sh b/docker/run_airsim_image_source.sh
index 39e9b9ed..3ad84441 100755
--- a/docker/run_airsim_image_source.sh
+++ b/docker/run_airsim_image_source.sh
@@ -54,6 +54,7 @@ done
 # and tell the docker container to execute UNREAL_BINARY_COMMAND
 $DOCKER_CMD -it \
     -v $(pwd)/settings.json:/home/airsim_user/Documents/AirSim/settings.json \
+    -v /usr/share/vulkan/icd.d:/usr/share/vulkan/icd.d \
     -e SDL_VIDEODRIVER=$SDL_VIDEODRIVER_VALUE \
     -e SDL_HINT_CUDA_DEVICE='0' \
     --net=host \

Hoping this helps others.