Spent today hardening VinylBot for production: fixed a crash bug where an unhandled ffmpeg/stream error in the audio player could take down the entire bot for every server at once, added global uncaughtException/unhandledRejection handlers to both bots, fixed a race condition in the Slack round timer, and cleaned up leaked temp mp3 files on failed downloads.

Also dockerized the Angular website (nginx + multi-stage build) and got all three services (Discord bot, Slack bot, website) live on their own subdomains behind the VPS firewall.

For the problem of the streaming on server or vps I decided to add two methods for gathering audio mp3s. The first time it will try with spotify, searching for the preview_url. After that it will try deezer and Itunes, that represents a valid alternative.