--arch option doesn't imply self-contained
Up until now, the --arch option for dotnet CLI commands such as dotnet publish implied that the app was self-contained. The behavior of the --arch option has now been changed to match that of the --runtime option, and it no longer implies that an app is self-contained.
Previous behavior
--arch implied --self-contained.
New behavior
--arch doesn't imply anything about --self-contained.
Version introduced
.NET 8 RC 2
Type of breaking change
This change is a behavioral change.
Reason for change
This change was made to unify the behavior of --arch with that of --runtime, which it's an alias for. The behavior for --runtime was also changed in .NET 8.
Recommended action
If your application needs to be self contained, set --self-contained on your CLI calls, or set MSBuild properties such as <SelfContained>true</SelfContained> or <PublishSelfContained>true</PublishSelfContained>.
