Describe the bug
The kernel in the Ubuntu 18.04 images suffers from a kernel bug that prevents .NET Core from running in a container.

It seems that subsequent updates may have fixed this.

Virtual environments affected

• macOS 10.14
• Ubuntu 16.04 LTS
• Ubuntu 18.04 LTS
• Windows Server 2016 R2
• Windows Server 2019

Expected behavior
.NET Core containers run correctly

Actual behavior
.NET Core container runs fail with "The FileName property should not be a directory unless UseShellExecute is set"

See https://github.community/t5/GitHub-Actions/Docker-build-failure-on-Ubuntu-18-04-host/m-p/33224#M1423