tvheadend: added to wiki with setup and fritzbox guide

wiki/docker-images/linuxserver_-_tvheadend.md

@@ -0,0 +1,72 @@
+# linuxserver - tvheadend
+
+This is a docker container for a [TVHeadend](../tvheadend.md)
+server.
+The official container and documentation was made by
+[linuxserver](https://hub.docker.com/r/linuxserver/tvheadend).
+
+## Set-up
+
+Create the files `rebuild.sh` and `docker-compose.yml` at the same place.
+Change the settings according to your needs and run `./rebuild.sh` afterwards.
+
+## Environment-variables
+
+Set the following environment-variables in the `environment:` section of the
+docker-compose file.
+
+| Name                  | Usage                       | Default                 |
+| --------------------- | --------------------------- | ----------------------- |
+| `PUID`                | user id for container user  | `1000`                  |
+| `PGID`                | group id for container user | `1000`                  |
+| `TZ`                  | specify the timezone        | `Europe/London`         |
+| `RUN_OPTS`          | specify the timezone          | ` `                     |
+
+## Volumes
+
+Set the following volumes in the `volumes:` section of the docker-compose file.
+
+| Outside mount/volume name | Container mount | Description                       |
+| ------------------------- | --------------- | --------------------------------- |
+| `config`                  | `/config`       | directory for config              |
+| `tvdvr`                   | `/recordings`   | directory for storage             |
+
+## Ports
+
+Set the following ports in the `ports:` section.
+
+| Container Port | Recommended outside port | Protocol | Description  |
+| -------------- | ------------------------ | -------- | ------------ |
+| `9981`         | ` `                      | TCP      | webUI        |
+| `9982`         | ` `                      | TCP      | HTSP port    |
+
+## rebuild.sh
+
+```sh
+#!/bin/sh
+docker-compose down
+docker pull lscr.io/linuxserver/tvheadend:latest
+docker-compose up -d
+```
+
+## docker-compose.yml
+
+```yml
+version: "2.1"
+services:
+  tvheadend:
+    image: lscr.io/linuxserver/tvheadend:latest
+    environment:
+      - PUID=1000
+      - PGID=1000
+      - TZ=Europe/London
+    volumes:
+      - config:/config
+      - tvdvr:/recordings
+    network_mode: "host"
+    restart: unless-stopped
+
+volumes:
+    config:
+    tvdvr:
+```

wiki/docker-images/matrixdotorg_-_synapse.md

@@ -52,7 +52,6 @@ docker-compose up -d
 ## docker-compose.yml
 
 ```yml
-
 services:
   synapse:
     image: "matrixdotorg/synapse:latest"