[BUG] Comskip package missing

Start with the universal-package-install mod and the INSTALL_PACKAGES path shown in the reproduction, then reproduce the failure against the logged Ubuntu resolute package indexes. Check how the mod resolves OS packages and whether comskip is available for that base; done means the documented Emby Docker setup installs comskip without the apt error.

Is there an existing issue for this?

• I have searched the existing issues

Name of mod

Comskip

Name of base container

Emby

Current Behavior

Logs show E: Unable to locate package comskip and comskip is not installed

Expected Behavior

Comskip should be installed as in previous versions

Steps To Reproduce

1. Install Emby Linuxserver from Unraid Community apps
2. Add environment variables: DOCKER_MODS: linuxserver/mods:universal-package-install and INSTALL_PACKAGES: comskip
3. Run it
4. Logs show E: Unable to locate package comskip and comskip is not installed

Environment

- OS: Unraid
- How docker service was installed: Unraid community apps

CPU architecture

x86-64

Docker creation

docker run
  -d
  --name='EmbyServer'
  --net='proxynet'
  --pids-limit 2048
  -e TZ="America/New_York"
  -e HOST_OS="Unraid"
  -e HOST_HOSTNAME="Yoda"
  -e HOST_CONTAINERNAME="EmbyServer"
  -e 'PUID'='99'
  -e 'PGID'='100'
  -e 'GIDLIST'='2'
  -e 'NVIDIA_VISIBLE_DEVICES'='GPU-c33f808f-27a1-0c9d-8e69-91f6e1110fac'
  -e 'NVIDIA_DRIVER_CAPABILITIES'='all'
  -e 'DOCKER_MODS'='linuxserver/mods:universal-package-install'
  -e 'INSTALL_PACKAGES'='comskip'
  -l net.unraid.docker.managed=dockerman
  -l net.unraid.docker.webui='http://[IP]:[PORT:8096]/'
  -l net.unraid.docker.icon='https://raw.githubusercontent.com/MediaBrowser/Emby.Resources/master/images/Logos/logoicon.png'
  -p '8096:8096/tcp'
  -v '/mnt/user/':'/mnt':'rw'
  -v '/mnt/user/appdata/EmbyServer':'/config':'rw'
  --device='/dev/dri' 'linuxserver/emby:latest' 
f644ba34fc7cf53e564ee92d6dc11bc02a4b3411ed3edc75b9243b7890a1e21a

Container logs

text  error  warn  system  array  login  

[mod-init] Running Docker Modification Logic
[mod-init] Adding linuxserver/mods:universal-package-install to container
[mod-init] Downloading linuxserver/mods:universal-package-install from lscr.io
[mod-init] Installing linuxserver/mods:universal-package-install
[mod-init] linuxserver/mods:universal-package-install applied to container
[migrations] started
[migrations] no migrations found
───────────────────────────────────────

      ██╗     ███████╗██╗ ██████╗
      ██║     ██╔════╝██║██╔═══██╗
      ██║     ███████╗██║██║   ██║
      ██║     ╚════██║██║██║   ██║
      ███████╗███████║██║╚██████╔╝
      ╚══════╝╚══════╝╚═╝ ╚═════╝

   Brought to you by linuxserver.io
───────────────────────────────────────

To support LSIO projects visit:
https://www.linuxserver.io/donate/

───────────────────────────────────────
GID/UID
───────────────────────────────────────

User UID:    99
User GID:    100
───────────────────────────────────────
Linuxserver.io version: 4.9.5.0-ls291
Build-date: 2026-08-07T01:06:23+00:00
───────────────────────────────────────
    
**** creating group groupmdmf with id 18 ****
**** adding /dev/dri/renderD129 to group groupmdmf with id 18 ****
**** permissions for /dev/dri/renderD128 are good ****
**** permissions for /dev/dri/card1 are good ****
**** permissions for /dev/dri/card0 are good ****
[pkg-install-init] **** Adding comskip to OS package install list ****
[pkg-install-init] **** Installing all mod packages ****
Get:1 http://archive.ubuntu.com/ubuntu resolute InRelease [136 kB]
Get:2 http://security.ubuntu.com/ubuntu resolute-security InRelease [137 kB]
Get:3 http://archive.ubuntu.com/ubuntu resolute-updates InRelease [137 kB]
Get:4 http://security.ubuntu.com/ubuntu resolute-security/restricted amd64 Packages [397 kB]
Get:5 http://archive.ubuntu.com/ubuntu resolute-backports InRelease [136 kB]
Get:6 http://archive.ubuntu.com/ubuntu resolute/universe amd64 Packages [20.1 MB]
Get:7 http://security.ubuntu.com/ubuntu resolute-security/main amd64 Packages [455 kB]
Get:8 http://security.ubuntu.com/ubuntu resolute-security/universe amd64 Packages [185 kB]
Get:9 http://security.ubuntu.com/ubuntu resolute-security/multiverse amd64 Packages [11.2 kB]
Get:10 http://archive.ubuntu.com/ubuntu resolute/restricted amd64 Packages [189 kB]
Get:11 http://archive.ubuntu.com/ubuntu resolute/multiverse amd64 Packages [352 kB]
Get:12 http://archive.ubuntu.com/ubuntu resolute/main amd64 Packages [1,874 kB]
Get:13 http://archive.ubuntu.com/ubuntu resolute-updates/restricted amd64 Packages [409 kB]
Get:14 http://archive.ubuntu.com/ubuntu resolute-updates/main amd64 Packages [552 kB]
Get:15 http://archive.ubuntu.com/ubuntu resolute-updates/universe amd64 Packages [294 kB]
Get:16 http://archive.ubuntu.com/ubuntu resolute-updates/multiverse amd64 Packages [14.4 kB]
Get:17 http://archive.ubuntu.com/ubuntu resolute-backports/universe amd64 Packages [567 B]
Fetched 25.4 MB in 4s (7,169 kB/s)
Reading package lists...
Reading package lists...
Building dependency tree...
Reading state information...
E: Unable to locate package comskip
[custom-init] No custom files found, skipping...