Set DB prefix in env

.env.example

@@ -17,7 +17,7 @@ DB_HOST=localhost
 DB_DATABASE=null
 DB_USERNAME=null
 DB_PASSWORD=null
-
+DB_PREFIX=null
 
 # --------------------------------------------
 # REQUIRED: OUTGOING MAIL SERVER SETTINGS

config/database.php

@@ -66,7 +66,7 @@ return [
             'password'  => env('DB_PASSWORD', ''),
             'charset'   => 'utf8',
             'collation' => 'utf8_unicode_ci',
-            'prefix'    => '',
+            'prefix'    => env('DB_PREFIX', null),
             'strict'    => false,
             'engine'    => null,
         ],