Radarr folder is not writable by user abc

Radarr version (exact version):
OS: Windows running docker desktop
Description of issue:

I have a network folder from my synology nas mounted to my pc as a drive letter, drive Z: via smb. I have full access on my pc and can read/write without issues. When I try to add that Z: drive as a volume in docker I get the error “folder is not writable by user abc”.

I have the puid & pgid set as 1000 and I have also tried setting as 0 but nothing seems to work. What am I missing here? I have full access in my computer but docker cannot do anything with that drive. Docker can however access my local windows D drive where my config files are located.

This is my docker compose:

    image: lscr.io/linuxserver/radarr:latest
    container_name: radarr
      - PUID=1000
      - PGID=1000
      - TZ=America/Chicago
      - /etc/localtime:/etc/localtime:ro
      - Z:\Movies\test:/Synology:rw
      - D:\Documents\Docker\radarr:/config
      - 7878:7878
    restart: unless-stopped

Radarr is not Sonarr, please use their support channels for support with Radarr.