I’ve had a problem with some Containers I’m configuring – how do I set machine/environment specific settings in those containers? I can’t just patch them in with Sitecore patches – the files in the image are supposed to be immutable.

I could use Environment Variables (which is what the Sitecore container images do for App Settings and Connection Strings), and the $(env:variablename) syntax gives a way of doing that – but it could mean editing a lot of places.

Well, there’s a better way, and Vitalii Tylyk describes a nice way to do this – Sitecore environment variables config builder.

That’s pretty nifty, but I wonder if it could be adjusted to set cache sizes too…