- aspnet/AspNetCore-Internal#2126
- allow release pipeline to publish symbols on all builds: #10113
- add new project that publishes symbols to MSDL and SymWeb
- release pipeline prepares then restores and builds the new project
- expire symbols after 10 years (or so)
nits:
- add `$env:DOTNET_SKIP_FIRST_TIME_EXPERIENCE` to ci.yml