Update docker command

Author: orangecoding

README.md

@@ -53,7 +53,11 @@ Fredy is proudly backed by the **JetBrains Open Source Support Program**.
 > In order to start Fredy, you must provide a config.json. As a start, use the one in this repo: https://github.com/orangecoding/fredy/blob/master/conf/config.json
 
 ``` bash
-docker run -d --name fredy -v fredy_conf:/conf -p 9998:9998 ghcr.io/orangecoding/fredy:master
+docker run -d --name fredy \
+  -v fredy_conf:/conf \
+  -v fredy_db:/db \
+  -p 9998:9998 \
+  ghcr.io/orangecoding/fredy:master
 ```
 
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