Can't connect to welcome page

[superfast200]

Complete noob, first time setting JF up.

Used this guide and got to step 10 - when I get to step 10 (Now open your browser and type in http://Synology-ip-address:8096) and try to actually connect I get "Hmm. We’re having trouble finding that site.
We can’t connect to the server at synology-ip-address."

Not sure what I'm doing wrong as it seems pretty straightforward.

Setting up on Synology NAS with Container Manager 24.0.2-1535

User Defined Script:
docker run -d --name=jellyfin \
-v /volume1/docker/jellyfin/config:/config \
-v /volume1/docker/jellyfin/cache:/cache \
-v /volume1/video/movies:/media \
--user 1026:100 \
--net=host \
--restart always \
jellyfin/jellyfin

I'm getting this error :
docker: invalid reference format.
See 'docker run --help'.
/bi/bash: line 4: --user: command not found

Not sure what I'm doing wrong...

[TheDreadPirate]

"1026:100" is specific to the guide writer's system. Change that value to match user IDs on your system.

"--user" is a valid docker parameter, so that is the only thing that makes sense.

[superfast200]

I got the same values when I got them from my system?

Task: My UID and GID
Start time: Sat, 05 Apr 2025 00:02:16 -0700
Stop time: Sat, 05 Apr 2025 00:02:19 -0700
Current status: 0 (Normal)
Standard output/error:
uid=1026(XXXXX) gid=100(users) groups=100(users),101(administrators),1023(http),65536(video)