setup-dmd GitHub action

[Mihails]

On Thursday, 12 September 2019 at 22:00:11 UTC, kinke wrote:
> Seems like a tighter integration of Azure Pipelines (somewhat 
> adapted) into GitHub, an obvious move by Microsoft to foster 
> their position. So Windows/Linux/macOS on x86_64 (Azure) hosts, 
> max. 6 hours runtime per job, max 20 jobs in parallel (Azure: 
> 10).

Cleaned up workflow yml syntax and typescript API stand out as a 
major improvement for me compared to old Azure. Also streamlined 
docker integration. There is much less boilerplate involved 
overall.

And it is worth mentioning that even before that Azure was among 
the best available CI options if you need to test a project on 
all 3 major OS, I can't remember any other free CI out of my head 
which provides windows/linux/macos runners without having to 
maintain separate test scripts for those.

So essentially Github Actions takes existing top CI offer and 
makes it easier to use.