Local proxy server using Traefik/Docker - docker

Question

I'm trying to create some kind of reverse proxy server that would serve a port running on my local network (192.168.0.15:5083) through either another port (192.168.0.15:<ANOTHER PORT>) or through another path on the IP address (192.168.0.15/pathname). I want this to be reachable from other computers on the same network.
I'm trying to achieve this using Traefik with Docker through a docker-compose.yml file. Currently I have it set up like this:
lms:
container_name: lms
image: epoupon/lms
user: ${PUID}:${PGID}
ports:
- 5083:5082
volumes:
- ${USERDIR}/docker/lms:/var/lms
- /media/music:/music:ro
environment:
- TZ=${TZ}
- PUID=${PUID}
- PGID=${PGID}
labels:
- "traefik.enable=true"
- "traefik.http.routers.lms.rule=Path(`/lms`)"
restart: unless-stopped
reverse-proxy:
image: traefik:v2.6
command: --api.insecure=true --providers.docker
ports:
- "80:80"
- "8080:8080"
volumes:
- /var/run/docker.sock:/var/run/docker.sock
What I'm trying to do here is to create a path on the servers IP address (192.168.0.15/lms) that would serve port 5083 (192.168.0.15:5083). The purpose of this is to then be able to apply CORS headers to the proxy server.
When visiting 192.168.0.15/lms from another machine on the same network as the server, I get this error message:
Fatal error: failed loading /js/jquery-1.10.2.min.js
I interpret this as if it gets a connection to port 5083, but the assets/resources being used on the front end on that port is not loading correctly.
Am I doing this right or should I do it in a different way to succeed?