Root Cause Analysis

Hit a weird issue when updating to .NET 7.

• Updating .NET changes the subdir within output path that contains your code (e.g. dist/apps/my-api/bin/net7.0 instead of dist/apps/my-api/bin/net6.0).
• We infer the path to your output when extracting swagger documentation, by globbing for .dll files that match your project's name inside of the root dist folder and using the first match. (e.g. glob(dist/apps/my-api/**/my-api.dll)[0])
• If you don't remember to clean the dist folder, the .NET build's old results end up in the nx cache.

All of the above combined get you a poisoned cache for nx build my-api that causes nx swagger my-api to fail.

Fix

• swagger executor will error appropriately when it finds multiple matching DLLs, instead of using the first silently. If you target is meant to create multiple DLLs that would match the glob we use, you can and should manually specify the assembly path in project.json.
• build executor should clean old artifacts to prevent bad cache entries from cropping up.