services.AddSingleton();We leveraged this existing dependency injection structure to properly set up the AOT DLL build. By defining a custom IoC container and injecting it with the concrete implementations required for offline play we were able to minimize the amount of refactoring necessary to make everything work. For the previous telemetry client example, we simply inject a no-op implementation in the serverless code.
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But of course, like any immutable system, there are mutable parts (otherwise, we couldn’t create any configuration files). OSTree handles this with “overlays” (actually, we use OverlayFS) that allow a read-write filesystem to be layered on top of the immutable system. For example, the /etc and /var directories are writable, while the rest of the system is read-only.
// 4. Call the original function so the audio would still play