It’s possible.

Requires pulseaudio pavucontrol alsa-lib alsa-utils acpilight

Actual requirements may vary depending on your configuration. I am only writing what worked for me.

It should be easy.

If you are here then I assume you already know the purpose of using code-server. So why on phone? Phones these days have become quite powerful. Maybe you have an older laptop lying around. The existence of code-server on Android implies there is at least one use case being fulfilled. So I will not pursue the topic any further.