improve docker docs (#315)

Signed-off-by: Agustín Ramiro Díaz <agustin.ramiro.diaz@gmail.com>
Co-authored-by: ekwuno <Obinnacodes@gmail.com>

doc-surrealdb_versioned_docs/version-1.x/installation/running/docker.mdx

@@ -33,13 +33,15 @@ docker run --rm --pull always -p 8000:8000 surrealdb/surrealdb:latest start
 In order to persist data when the Docker instance is restarted or shutdown, specify a Docker folder using the Docker *`-v`* command line argument, and use the on-disk storage engine in SurrealDB using the path prefix chosen as a Docker folder.
 
 ```bash
-docker run --rm --pull always -p 8000:8000 -v /mydata:/mydata surrealdb/surrealdb:latest start file:/mydata/mydatabase.db
+mkdir mydata # Create a directory to store the database, owned by the current user
+docker run --rm --pull always -p 8000:8000 --user $(id -u) -v $(pwd)/mydata:/mydata surrealdb/surrealdb:latest start file:/mydata/mydatabase.db
 ```
 
 The default logging level for the database server is `info`, resulting in any informational logs to be output to the standard output. To control the logging verbosity, specify the *`--log`* argument. The following command starts the database with `trace` level logging, resulting in most logs being output to the terminal.
 
 ```bash
-docker run --rm --pull always -p 8000:8000 -v /mydata:/mydata surrealdb/surrealdb:latest start --log trace file:/mydata/mydatabase.db
+mkdir mydata # Create a directory to store the database, owned by the current user
+docker run --rm --pull always -p 8000:8000 --user $(id -u) -v $(pwd)/mydata:/mydata surrealdb/surrealdb:latest start --log trace file:/mydata/mydatabase.db
 ```
 
 ### Enabling authentication