[BUG] JELLYFIN_PublishedServerUrl example variable does not contain http/https protocol resulting in errors with media playback

[shyzus]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

When using the example value for the JELLYFIN_PublishedServerUrl variable such as an ip address like 192.168.1.15 or a hostname like jellyfin.local.

When playing back media particularly music it may abruptly stop playing back and halt completely requiring to restart the client's session.

see: jellyfin/jellyfin-web#6054

Expected Behavior

Playback should be allowed to happen without unexpected interruptions.

Steps To Reproduce

1. Set up jellyfin server according to the docs in the readme.
2. Set JELLYFIN_PublishedServerUrl to a valid value that does not include http/https.
3. Playback music via any client(Web, Jellyfin desktop, Kodi, Finamp) within an hour playback will abruptly stop.

Environment

Not relevant

CPU architecture

x86-64

Docker creation

docker run -d \
  --name=jellyfin \
  -e PUID=1000 \
  -e PGID=1000 \
  -e TZ=Etc/UTC \
  -e JELLYFIN_PublishedServerUrl=192.168.1.15 `#optional` \
  -p 8096:8096 \
  -p 8920:8920 `#optional` \
  -p 7359:7359/udp `#optional` \
  -p 1900:1900/udp `#optional` \
  -v /hdd/jellyfin/library:/config \
  -v /hdd/jellyfin/tvseries:/data/tvshows \
  -v /hdd/jellyfin/movies:/data/movies \
  -v /hdd/jellyfin/music:/data/music \
  --restart unless-stopped \
  lscr.io/linuxserver/jellyfin:latest

Container logs

Not relevant. Error in question happens client side.
See: https://github.com/jellyfin/jellyfin-web/issues/6054

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