Computers. Very useful when they work, but wildly frustrating when they don't. Recently I had one of those moments of frustration (well, two days actually) with Azure Devops and its YAML-based build pipelines. The root cause here seems like one of those things that could well bite others, so here's what happened to me...
Most of the time when I want to explore the filesystem of a Sitecore container, it's pretty easy. I can use Visual Studio's container browser. But that only works when a container is running - and if it's based on a job image this may be a very brief window - too brief to find and explore the file in question. So what can I do?