Any chance of a container for Logitech Media Server (formerly known as SqueezeBox Server and SlimServer).
Despite Logitech discontinuing the hardware line, there are still a number of people using the server to manage and distribute their music. The hardware players still work well, and there are software players for a number of platforms. There is also a distribution available to configure a Raspberry Pi with appropriate DAC as a player for the system.
The user forums are still very active, and the software receives regular updates by a Logitech employee.