Add docs for deploying screego in docker without network_mode: host

docs/install.md

@@ -2,7 +2,7 @@
 
 Latest Version: **GITHUB_VERSION**
 
-?> Before starting Screego you may read [Configuration](config.md).
+Before starting Screego you may read [Configuration](config.md).
 
 !> TLS is required for Screego to work. Either enable TLS inside Screego or 
    use a reverse proxy to serve Screego via TLS.
@@ -16,26 +16,16 @@ Setting up Screego with docker is pretty easy, you basically just have to start
 docker images are multi-arch docker images.
 This means the image will work for `amd64`, `i386`, `ppc64le` (power pc), `arm64`, `armv7` (Raspberry PI) and `armv6`.
 
-When using [TURN](nat-traversal.md), Screego will allocate ports for relay
-connections, this currently only works with network mode host inside docker.
-See [#56](https://github.com/screego/server/issues/56)
-
 By default, Screego runs on port 5050.
 
 ?> Replace `EXTERNALIP` with your external IP. One way to find your external ip is with ipify.
-
-   ```bash
-   $ curl 'https://api.ipify.org'
-   ```
-
-### Network Host
+   `curl 'https://api.ipify.org'`
 
 ```bash
 $ docker run --net=host -e SCREEGO_EXTERNAL_IP=EXTERNALIP ghcr.io/screego/server:GITHUB_VERSION
 ```
 
-#### docker-compose.yml
-
+**docker-compose.yml**
 ```yaml
 version: "3.7"
 services:
@@ -46,6 +36,40 @@ services:
       SCREEGO_EXTERNAL_IP: "EXTERNALIP"
 ```
 
+If you don't want to use the host network, then you can configure docker like this:
+
+<details><summary>(Click to expand)</summary>
+<p>
+
+```bash
+$ docker run -it \
+    -e SCREEGO_EXTERNAL_IP=EXTERNALIP \
+    -e SCREEGO_TURN_PORT_RANGE=50000:50200 \
+    -p 5050:5050 \
+    -p 3478:3478 \
+    -p 50000-50100:50000-50200/udp \
+    screego/server:GITHUB_VERSION
+```
+
+#### docker-compose.yml
+
+```yml
+version: "3.7"
+services:
+  screego:
+    image: ghcr.io/screego/server:GITHUB_VERSION
+    ports:
+      - 5050:5050
+      - 3478:3478
+      - 50000-50100:50000-50200/udp
+    environment:
+      SCREEGO_EXTERNAL_IP: "192.168.178.2"
+      SCREEGO_TURN_PORT_RANGE: "50000:50200"
+```
+
+</p>
+</details>
+
 ## Binary
 
 ### Supported Platforms: