Added Jellyfin (#428)

* Added Jellyfin

* Added HTTPS info in 'end' instruction

public/v4/apps/jellyfin.yml

@@ -0,0 +1,49 @@
+captainVersion: 4
+services:
+    $$cap_appname:
+        image: ghcr.io/linuxserver/jellyfin
+        environment:
+            PUID: $$cap_puid
+            PGID: $$cap_pgid
+            TZ: $$cap_tz
+            JELLYFIN_PublishedServerUrl: '$$cap_appname.$$cap_root_domain'
+        volumes:
+            - $$cap_appname-config:/config
+            - $$cap_appname-tvshows:/data/tvshows
+            - $$cap_appname-movies:/data/movies
+        caproverExtra:
+            containerHttpPort: '8096'
+        ports:
+            - 7359:7359
+            - 1900:1900
+caproverOneClickApp:
+    variables:
+        - id: '$$cap_puid'
+          label: Jellyfin UserID
+          defaultValue: 1000
+          description: UserID used by JellyFin to avoid permission problems, please refer to docs- https://github.com/linuxserver/docker-jellyfin#Parameters
+          validRegex: /[0-9]/
+        - id: '$$cap_pgid'
+          label: Jellyfin GroupID
+          defaultValue: 1000
+          description: GroupID used by JellyFin to avoid permission problems, please refer to docs- https://github.com/linuxserver/docker-jellyfin#Parameters
+          validRegex: /[0-9]/
+        - id: '$$cap_tz'
+          label: Time Zone
+          defaultValue: Asia/Kolkata
+          description: Get yours from https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
+          validRegex: /.{1,}/
+    instructions:
+        start: |-
+            Jellyfin is a Free Software Media System that puts you in control of managing and streaming your media.
+            It is an alternative to the proprietary Emby and Plex, to provide media from a dedicated server to end-user devices via multiple apps.
+
+            For more details visit- https://github.com/jellyfin/jellyfin
+
+            PS. It might not work with RPi, or atleast, you wont be able to use OpenMax or V4L2 because Caprover ignores 'devices' parameters of docker-compose
+        end: |-
+            Jellyfin has been successfully deployed! Please wait atleast 2-4 mins before trying to connect. To enable HTTPS, enable it inside app config from caprover dashboard. 'Enable HTTPS' setting inside of Jellyfin might not work.
+    displayName: Jellyfin
+    isOfficial: false
+    description: A free media streaming alternative to Plesk. Also supports group sync.
+    documentation: See https://github.com/linuxserver/docker-jellyfin