How do I configure copyparty on Synology if I want to share existing shared folders?

[argumemnon]

I would rather use copyparty to browse the files I have on my Synology DiskStation than log into Synology's homepage and use their crappy DSM File Station. However, I'm not sure how I would configure copyparty to do that, nor if it's a good idea (data corruption? root access? loops?)

Every shared folder on Synology inside /volume1/ is owned by root by default, then everything inside based on what file permissions you have assigned to Synology users via Synology Control Panel.

Currently Synology instructions (https://github.com/9001/copyparty/blob/hovudstraum/docs/synology-dsm.md) tell me to put everything inside a folder called "media1", which is inside a Synology shared folder I created for the sole purpose of using copyparty. But I want to share existing Synology shared folders. Can I?

Here is my current layout on Synology:

/volume1/data01
/volume1/immich
/volume1/other
/volume1/docker/
            |_ /copyparty/
                      |_ /configs/
                              |_ /cpp/
                      |_ /media1

I thought I would be able to add /volume1/data01 etc as mounts in the docker container, but I guess not. I tried and I'm getting HTTP 500 errors when accessing.

22:39:44.320 172.23.0.1 42062      http500: httpcli.py:704 <run>: return self.handle_get() and self.keepalive
httpcli.py:1300 <handle_get>: return self.tx_browser()
httpcli.py:6227 <tx_browser>: fsroot, vfs_ls, vfs_virt = vn.ls(
authsrv.py:647 <_ls>: real = list(statdir(self.log, scandir, lstat, abspath, throw))
util.py:2960 <statdir>: with os.scandir(btop) as dh:
[PermissionError] [Errno 13] Permission denied: b'/w/data01', '/data01'