Example of a build test of a library via Github Actions. Here it builds Perl5 on Windows on WSLv1 (Ubuntu 20.04, both case-sensitive and case-insensitive mounts).
For that I use a Github Action setup-wsl.
This example is for demonstrating Perl5 build bugs perl5#18252 and perl5#18254 (proposal of such a build configuration is in perl5#18323).