feat: Add var_gpu flag for GPU passthrough configuration

Changes:
- Add var_gpu variable to CT scripts for explicit GPU control
- Remove hardcoded GPU_APPS list - GPU detection now uses var_gpu flag
- Add var_gpu to VAR_WHITELIST for persistence in default.vars and app.vars
- Add GPU Passthrough option (Step 19) to advanced_settings wizard (now 20 steps)
- Update documentation

Apps with var_gpu=yes (GPU enabled by default):
- Media: jellyfin, plex, emby, channels, ersatztv, tunarr
- Transcoding: tdarr, unmanic, fileflows
- AI/ML: ollama, openwebui
- NVR: frigate, immich

Usage:
- Disable GPU: var_gpu=no bash -c '$(curl -fsSL ...jellyfin.sh)'
- Enable GPU: var_gpu=yes bash -c '$(curl -fsSL ...debian.sh)'
- Via default.vars: echo 'var_gpu=yes' >> /usr/local/community-scripts/default.vars
- Via advanced settings wizard (Step 19)

Author: MickLesk

ct/channels.sh

@@ -13,6 +13,7 @@ var_disk="${var_disk:-8}"
 var_os="${var_os:-debian}"
 var_version="${var_version:-12}"
 var_unprivileged="${var_unprivileged:-0}"
+var_gpu="${var_gpu:-yes}"
 
 header_info "$APP"
 variables
@@ -38,4 +39,4 @@ description
 msg_ok "Completed Successfully!\n"
 echo -e "${CREATING}${GN}${APP} setup has been successfully initialized!${CL}"
 echo -e "${INFO}${YW} Access it using the following URL:${CL}"
-echo -e "${TAB}${GATEWAY}${BGN}http://${IP}:8089${CL}"
+echo -e "${TAB}${GATEWAY}${BGN}http://${IP}:8089${CL}"

ct/emby.sh

@@ -13,6 +13,7 @@ var_disk="${var_disk:-8}"
 var_os="${var_os:-ubuntu}"
 var_version="${var_version:-24.04}"
 var_unprivileged="${var_unprivileged:-1}"
+var_gpu="${var_gpu:-yes}"
 
 header_info "$APP"
 variables

ct/ersatztv.sh

@@ -13,6 +13,7 @@ var_disk="${var_disk:-5}"
 var_os="${var_os:-debian}"
 var_version="${var_version:-12}"
 var_unprivileged="${var_unprivileged:-1}"
+var_gpu="${var_gpu:-yes}"
 
 header_info "$APP"
 variables

ct/fileflows.sh

@@ -13,6 +13,7 @@ var_disk="${var_disk:-8}"
 var_os="${var_os:-debian}"
 var_version="${var_version:-12}"
 var_unprivileged="${var_unprivileged:-1}"
+var_gpu="${var_gpu:-yes}"
 
 header_info "$APP"
 variables

ct/frigate.sh

@@ -13,6 +13,7 @@ var_disk="${var_disk:-20}"
 var_os="${var_os:-debian}"
 var_version="${var_version:-11}"
 var_unprivileged="${var_unprivileged:-0}"
+var_gpu="${var_gpu:-yes}"
 
 header_info "$APP"
 variables
@@ -38,4 +39,4 @@ description
 msg_ok "Completed Successfully!\n"
 echo -e "${CREATING}${GN}${APP} setup has been successfully initialized!${CL}"
 echo -e "${INFO}${YW} Access it using the following URL:${CL}"
-echo -e "${TAB}${GATEWAY}${BGN}http://${IP}:5000${CL}"
+echo -e "${TAB}${GATEWAY}${BGN}http://${IP}:5000${CL}"

ct/immich.sh

@@ -13,6 +13,7 @@ var_ram="${var_ram:-4096}"
 var_os="${var_os:-debian}"
 var_version="${var_version:-13}"
 var_unprivileged="${var_unprivileged:-1}"
+var_gpu="${var_gpu:-yes}"
 
 header_info "$APP"
 variables

ct/jellyfin.sh

@@ -13,6 +13,7 @@ var_disk="${var_disk:-16}"
 var_os="${var_os:-ubuntu}"
 var_version="${var_version:-24.04}"
 var_unprivileged="${var_unprivileged:-1}"
+var_gpu="${var_gpu:-yes}"
 
 header_info "$APP"
 variables

ct/ollama.sh

@@ -12,6 +12,7 @@ var_ram="${var_ram:-4096}"
 var_disk="${var_disk:-35}"
 var_os="${var_os:-ubuntu}"
 var_version="${var_version:-24.04}"
+var_gpu="${var_gpu:-yes}"
 
 header_info "$APP"
 variables

ct/openwebui.sh

@@ -13,6 +13,7 @@ var_disk="${var_disk:-25}"
 var_os="${var_os:-debian}"
 var_version="${var_version:-13}"
 var_unprivileged="${var_unprivileged:-1}"
+var_gpu="${var_gpu:-yes}"
 
 header_info "$APP"
 variables

ct/plex.sh

@@ -13,6 +13,7 @@ var_disk="${var_disk:-8}"
 var_os="${var_os:-ubuntu}"
 var_version="${var_version:-24.04}"
 var_unprivileged="${var_unprivileged:-1}"
+var_gpu="${var_gpu:-yes}"
 
 header_info "$APP"
 variables
@@ -23,8 +24,8 @@ function update_script() {
   header_info
   check_container_storage
   check_container_resources
-  if [[ ! -f /etc/apt/sources.list.d/plexmediaserver.list ]] \
-   && [[ ! -f /etc/apt/sources.list.d/plexmediaserver.sources ]]; then
+  if [[ ! -f /etc/apt/sources.list.d/plexmediaserver.list ]] &&
+    [[ ! -f /etc/apt/sources.list.d/plexmediaserver.sources ]]; then
     msg_error "No ${APP} Installation Found!"
     exit
   fi