Pygame MIDI Playback from Dockerfile Deployment

Currently, I am trying to figure out how to play audio within a Digital Ocean Dockerfile container. The full writeup is here:

It is a Python Flask App; currently stuck at this error: pygame.error: ALSA: Couldn’t open audio device: No such file or directory

I’m not sure if this is something I could specify within my Dockerfile, or perhaps a runtime resource / console command I would have to execute after the app is deployed. Thanks!

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