Added Docker Command

docker.txt

@@ -0,0 +1,9 @@
+docker volume create gotify-data
+ 
+docker run \
+    -p 80:80 \
+    -e TZ="Europe/Berlin" \
+    -v gotify-data:/app/data \
+    --restart=always \
+    --name=Gotify \
+    gotify/server