Koel version v4.0.0 is available，Will this update？

[icofans]

Koel version v4.0.0 is available，This release version many issues and enhancements，Will this update？

[0xcaff]

You could try building it with KOEL_VERSION_REF set

docker-koel/Dockerfile

Line 5 in 9caf840

ARG KOEL_VERSION_REF=v3.7.2

I might update this eventually.