[Request] Environment Variables to control bound ports

[andrewazores]

Describe the feature

SeaweedFS requires a few different ports for each of its internal components, ex. ports 8333, 8888, and 8080 are bound by default. We should add environment variables processed by our entrypoint script to make it easy to configure these port numbers.

https://github.com/seaweedfs/seaweedfs/blob/master/README.md#example-using-seaweed-object-store

Anything other information?

No response