Updated Docker (markdown)

Docker.md

@@ -1,11 +1,15 @@
 Docker Command Line
 ```sh
+docker volume create termix-data
+```
+```sh
 docker run -d \
   --name termix \
   --restart unless-stopped \
   -p 8080:8080 \
-  -v mongodb-data:/data/db \
+  -v termix-data:/app/data \
   -e SALT="2v.F7!6a!jIzmJsu|[)h61$ZMXs;,i+~" \
+  -e PORT=8080 \
   ghcr.io/lukegus/termix:latest
 ```